<?xml version="1.0" encoding="US-ASCII"?>
<!-- DFIN New ActiveDisclosure (SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date :2022-11-08T13:00:33.6813+00:00 -->
<!-- Copyright (c) 2022 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema targetNamespace="http://www.cargurus.com/20220930" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:country="http://xbrl.sec.gov/country/2022" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:srt="http://fasb.org/srt/2022" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:us-gaap="http://fasb.org/us-gaap/2022" xmlns:dei="http://xbrl.sec.gov/dei/2022" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:carg="http://www.cargurus.com/20220930" xmlns:xlink="http://www.w3.org/1999/xlink">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance"/>
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase"/>
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt"/>
  <xsd:import schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" namespace="http://xbrl.org/2020/extensible-enumerations-2.0"/>
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd" namespace="http://xbrl.sec.gov/dei/2022"/>
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd" namespace="http://fasb.org/us-gaap/2022"/>
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd" namespace="http://xbrl.sec.gov/country/2022"/>
  <xsd:import schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" namespace="http://www.xbrl.org/dtr/type/2020-01-21"/>
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd" namespace="http://fasb.org/srt/2022"/>
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="carg-20220930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Labels link" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="carg-20220930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation link" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="carg-20220930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition link" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="carg-20220930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation link" xlink:type="simple"/>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedBalanceSheets" id="Role_StatementUnauditedCondensedConsolidatedBalanceSheets">
        <link:definition>100010 - Statement - Unaudited Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureEarningsPerShareScheduleOfReconciliationOfNumeratorAndDenominatorUsedInCalculationOfBasicAndDilutedNetIncomePerShareDetails2" id="DisclosureEarningsPerShareScheduleOfReconciliationOfNumeratorAndDenominatorUsedInCalculationOfBasicAndDilutedNetIncomePerShareDetails2">
        <link:definition>100020 - Disclosure - Earnings Per Share - Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Details) 2</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedBalanceSheetsParenthetical" id="Role_StatementUnauditedCondensedConsolidatedBalanceSheetsParenthetical">
        <link:definition>100030 - Statement - Unaudited Condensed Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedIncomeStatements" id="Role_StatementUnauditedCondensedConsolidatedIncomeStatements">
        <link:definition>100040 - Statement - Unaudited Condensed Consolidated Income Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedIncomeStatementsParenthetical" id="Role_StatementUnauditedCondensedConsolidatedIncomeStatementsParenthetical">
        <link:definition>100050 - Statement - Unaudited Condensed Consolidated Income Statements (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedStatementsOfComprehensiveIncome" id="Role_StatementUnauditedCondensedConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>100060 - Statement - Unaudited Condensed Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedStatementsOfRedeemableNoncontrollingInterestAndStockholdersEquity" id="Role_StatementUnauditedCondensedConsolidatedStatementsOfRedeemableNoncontrollingInterestAndStockholdersEquity">
        <link:definition>100070 - Statement - Unaudited Condensed Consolidated Statements of Redeemable Noncontrolling Interest and Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedStatementsOfRedeemableNoncontrollingInterestAndStockholdersEquityParenthetical" id="Role_StatementUnauditedCondensedConsolidatedStatementsOfRedeemableNoncontrollingInterestAndStockholdersEquityParenthetical">
        <link:definition>100080 - Statement - Unaudited Condensed Consolidated Statements of Redeemable Noncontrolling Interest and Stockholders' Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_StatementUnauditedCondensedConsolidatedStatementsOfCashFlows" id="Role_StatementUnauditedCondensedConsolidatedStatementsOfCashFlows">
        <link:definition>100090 - Statement - Unaudited Condensed Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureOrganizationAndBusinessDescription" id="Role_DisclosureOrganizationAndBusinessDescription">
        <link:definition>100100 - Disclosure - Organization and Business Description</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>100110 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureRevenueRecognition" id="Role_DisclosureRevenueRecognition">
        <link:definition>100120 - Disclosure - Revenue Recognition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureFairValueOfFinancialInstruments1" id="DisclosureFairValueOfFinancialInstruments1">
        <link:definition>100130 - Disclosure - Fair Value of Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosurePropertyAndEquipmentNet" id="Role_DisclosurePropertyAndEquipmentNet">
        <link:definition>100140 - Disclosure - Property and Equipment, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssets" id="Role_DisclosureGoodwillAndOtherIntangibleAssets">
        <link:definition>100150 - Disclosure - Goodwill and Other Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilities1" id="DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilities1">
        <link:definition>100160 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities and Other Non-Current Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureDebt" id="DisclosureDebt">
        <link:definition>100170 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureCommitmentsAndContingencies" id="Role_DisclosureCommitmentsAndContingencies">
        <link:definition>100180 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureStockBasedCompensation" id="Role_DisclosureStockBasedCompensation">
        <link:definition>100190 - Disclosure - Stock-based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureEarningsPerShare" id="Role_DisclosureEarningsPerShare">
        <link:definition>100200 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureIncomeTaxes" id="Role_DisclosureIncomeTaxes">
        <link:definition>100210 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSegmentAndGeographicInformation" id="Role_DisclosureSegmentAndGeographicInformation">
        <link:definition>100220 - Disclosure - Segment and Geographic Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureSubsequentEvents" id="DisclosureSubsequentEvents">
        <link:definition>100230 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>100240 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureRevenueRecognitionTables" id="Role_DisclosureRevenueRecognitionTables">
        <link:definition>100250 - Disclosure - Revenue Recognition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsTables" id="DisclosureFairValueOfFinancialInstrumentsTables">
        <link:definition>100260 - Disclosure - Fair Value of Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosurePropertyAndEquipmentNetTables" id="Role_DisclosurePropertyAndEquipmentNetTables">
        <link:definition>100270 - Disclosure - Property and Equipment, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsTables" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsTables">
        <link:definition>100280 - Disclosure - Goodwill and Other Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesTables" id="DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesTables">
        <link:definition>100290 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities and Other Non-Current Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureStockBasedCompensationTables" id="Role_DisclosureStockBasedCompensationTables">
        <link:definition>100300 - Disclosure - Stock-based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureEarningsPerShareTables" id="Role_DisclosureEarningsPerShareTables">
        <link:definition>100310 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSegmentAndGeographicInformationTables" id="Role_DisclosureSegmentAndGeographicInformationTables">
        <link:definition>100320 - Disclosure - Segment and Geographic Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureOrganizationAndBusinessDescriptionAdditionalInformationDetails" id="Role_DisclosureOrganizationAndBusinessDescriptionAdditionalInformationDetails">
        <link:definition>100330 - Disclosure - Organization and Business Description - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails">
        <link:definition>100340 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureRevenueRecognitionSummaryOfRevenueFromContractsWithCustomersByProductDetails" id="DisclosureRevenueRecognitionSummaryOfRevenueFromContractsWithCustomersByProductDetails">
        <link:definition>100350 - Disclosure - Revenue Recognition - Summary of Revenue from Contracts with Customers by Product (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureRevenueRecognitionAdditionalInformationDetails" id="Role_DisclosureRevenueRecognitionAdditionalInformationDetails">
        <link:definition>100360 - Disclosure - Revenue Recognition - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsScheduleOfFairValueLevelsAssetsMeasuredAtFairValueOnRecurringBasisDetails" id="DisclosureFairValueOfFinancialInstrumentsScheduleOfFairValueLevelsAssetsMeasuredAtFairValueOnRecurringBasisDetails">
        <link:definition>100370 - Disclosure - Fair Value of Financial Instruments - Schedule of Fair Value Levels, Assets Measured at Fair Value on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsAdditionalInformationDetails" id="DisclosureFairValueOfFinancialInstrumentsAdditionalInformationDetails">
        <link:definition>100380 - Disclosure - Fair Value of Financial Instruments - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsScheduleOfInvestmentsDetails" id="DisclosureFairValueOfFinancialInstrumentsScheduleOfInvestmentsDetails">
        <link:definition>100390 - Disclosure - Fair Value of Financial Instruments - Schedule of Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosurePropertyAndEquipmentNetScheduleOfPropertyAndEquipmentNetDetails" id="Role_DisclosurePropertyAndEquipmentNetScheduleOfPropertyAndEquipmentNetDetails">
        <link:definition>100400 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosurePropertyAndEquipmentNetAdditionalInformationDetails" id="Role_DisclosurePropertyAndEquipmentNetAdditionalInformationDetails">
        <link:definition>100410 - Disclosure - Property and Equipment, Net - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfChangesInCarryingValueOfGoodwillDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfChangesInCarryingValueOfGoodwillDetails">
        <link:definition>100420 - Disclosure - Goodwill and Other Intangible Assets - Summary of Changes in Carrying Value of Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsAdditionalInformationDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsAdditionalInformationDetails">
        <link:definition>100430 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfOtherIntangibleAssetsDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfOtherIntangibleAssetsDetails">
        <link:definition>100440 - Disclosure - Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseOfIntangibleAssetsDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseOfIntangibleAssetsDetails">
        <link:definition>100450 - Disclosure - Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense of Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesScheduleOfAccruedExpensesAccruedIncomeTa" id="DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesScheduleOfAccruedExpensesAccruedIncomeTa">
        <link:definition>100460 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities and Other Non-Current Liabilities - Schedule of Accrued Expenses, Accrued Income Taxes and Other Current Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesAdditionalInformationDetails" id="DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesAdditionalInformationDetails">
        <link:definition>100470 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities and Other Non-Current Liabilities - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesScheduleOfOtherNoncurrentLiabilitiesDeta" id="DisclosureAccruedExpensesAccruedIncomeTaxesAndOtherCurrentLiabilitiesAndOtherNoncurrentLiabilitiesScheduleOfOtherNoncurrentLiabilitiesDeta">
        <link:definition>100480 - Disclosure - Accrued Expenses, Accrued Income Taxes and Other Current Liabilities and Other Non-Current Liabilities - Schedule of Other Non-Current Liabilities - (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/DisclosureDebtAdditionalInformationDetails" id="DisclosureDebtAdditionalInformationDetails">
        <link:definition>100490 - Disclosure - Debt - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetails" id="Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetails">
        <link:definition>100500 - Disclosure - Commitments and Contingencies - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureStockBasedCompensationAdditionalInformationDetails" id="Role_DisclosureStockBasedCompensationAdditionalInformationDetails">
        <link:definition>100510 - Disclosure - Stock-based Compensation - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfStockBasedCompensationExpenseByAwardTypeDetails" id="Role_DisclosureStockBasedCompensationSummaryOfStockBasedCompensationExpenseByAwardTypeDetails">
        <link:definition>100520 - Disclosure - Stock-based Compensation - Summary of Stock-based Compensation Expense by Award Type (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfAllocationOfStockBasedCompensationExpenseDetails" id="Role_DisclosureStockBasedCompensationSummaryOfAllocationOfStockBasedCompensationExpenseDetails">
        <link:definition>100530 - Disclosure - Stock-based Compensation - Summary of Allocation of Stock-based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureEarningsPerShareAdditionalInformationDetails" id="Role_DisclosureEarningsPerShareAdditionalInformationDetails">
        <link:definition>100540 - Disclosure - Earnings Per Share - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureEarningsPerShareScheduleOfReconciliationOfNumeratorAndDenominatorUsedInCalculationOfBasicAndDilutedNetIncomePerShareDetails" id="Role_DisclosureEarningsPerShareScheduleOfReconciliationOfNumeratorAndDenominatorUsedInCalculationOfBasicAndDilutedNetIncomePerShareDetails">
        <link:definition>100550 - Disclosure - Earnings Per Share - Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureEarningsPerShareScheduleOfPotentiallyDilutiveCommonStockEquivalentsExcludedFromCalculationOfDilutedWeightedAverageSharesOutstandingDetails" id="Role_DisclosureEarningsPerShareScheduleOfPotentiallyDilutiveCommonStockEquivalentsExcludedFromCalculationOfDilutedWeightedAverageSharesOutstandingDetails">
        <link:definition>100560 - Disclosure - Earnings Per Share - Schedule of Potentially Dilutive Common Stock Equivalents Excluded from Calculation of Diluted Weighted-average Shares Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetails" id="Role_DisclosureIncomeTaxesAdditionalInformationDetails">
        <link:definition>100570 - Disclosure - Income Taxes - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSegmentAndGeographicInformationAdditionalInformationDetails" id="Role_DisclosureSegmentAndGeographicInformationAdditionalInformationDetails">
        <link:definition>100580 - Disclosure - Segment and Geographic Information - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.cargurus.com/20220930/taxonomy/role/Role_DisclosureSegmentAndGeographicInformationSummaryOfOperationsBySegmentAndGeographicalAreaDetails" id="Role_DisclosureSegmentAndGeographicInformationSummaryOfOperationsBySegmentAndGeographicalAreaDetails">
        <link:definition>100590 - Disclosure - Segment and Geographic Information - Summary of Operations by Segment and Geographical Area (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="carg_NetIncomeLossPerShareAttributableToCommonStockholdersAbstract" name="NetIncomeLossPerShareAttributableToCommonStockholdersAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_AccretionOfRedeemableNoncontrollingInterestToRedemptionValue" name="AccretionOfRedeemableNoncontrollingInterestToRedemptionValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_AccruedIncomeExpensesAndOtherCurrentPaymentReceivedInAdvanceThirdPartyPayment" name="AccruedIncomeExpensesAndOtherCurrentPaymentReceivedInAdvanceThirdPartyPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_AccruedLiabilitiesAccruedIncomeTaxesAndOtherLiabilitiesCurrent" name="AccruedLiabilitiesAccruedIncomeTaxesAndOtherLiabilitiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_AccruedTaxDistributionsToRedeemableNoncontrollingInterestHolders" name="AccruedTaxDistributionsToRedeemableNoncontrollingInterestHolders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_AccruedTaxDistributionsToRedeemableNoncontrollingInterestHoldersCurrent" name="AccruedTaxDistributionsToRedeemableNoncontrollingInterestHoldersCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_AcquisitionOfRedeemableNoncontrollingInterest" name="AcquisitionOfRedeemableNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_BusinessAcquisitionOptionToAcquireRemainingPercentageOfVotingInterests" name="BusinessAcquisitionOptionToAcquireRemainingPercentageOfVotingInterests" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="carg_ClosedTaxYear" name="ClosedTaxYear" type="dtr-types:gYearListItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_CompanysProductOfferings" name="CompanysProductOfferings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_CostOfGoodsAndServicesSoldDepreciationAmortizationAndImpairmentExpense" name="CostOfGoodsAndServicesSoldDepreciationAmortizationAndImpairmentExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_DecreaseInAccruedBonus" name="DecreaseInAccruedBonus" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_DecreaseInAccruedTaxDistributionsToRedeemableNoncontrollingInterest" name="DecreaseInAccruedTaxDistributionsToRedeemableNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_DecreaseInAllocatedShareBasedCompensationExpense" name="DecreaseInAllocatedShareBasedCompensationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_DecreaseInPaymentsReceivedInAdvanceFromThirdPartyPaymentProcessor" name="DecreaseInPaymentsReceivedInAdvanceFromThirdPartyPaymentProcessor" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_DepreciationAndAmortizationExcludingAmortizationOfIntangibleAssetsAndCapitalizedHostingArrangements" name="DepreciationAndAmortizationExcludingAmortizationOfIntangibleAssetsAndCapitalizedHostingArrangements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_DistributionsToRedeemableNoncontrollingInterestHolders" name="DistributionsToRedeemableNoncontrollingInterestHolders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_ExerciseOfGuarantee" name="ExerciseOfGuarantee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_ExerciseOfGuaranteeNetLoss" name="ExerciseOfGuaranteeNetLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_GuaranteeIncome" name="GuaranteeIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_GuaranteeNetLoss" name="GuaranteeNetLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_HeldToMaturityAmortizedCost" name="HeldToMaturityAmortizedCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_HeldToMaturityFairValue" name="HeldToMaturityFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_ImpairmentOfWebsiteDevelopmentCosts" name="ImpairmentOfWebsiteDevelopmentCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_IncreaseDecreaseInAccruedLiabilitiesAccruedIncomeTaxesAndOtherLiabilities" name="IncreaseDecreaseInAccruedLiabilitiesAccruedIncomeTaxesAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_IncreaseDecreaseInLeaseObligations" name="IncreaseDecreaseInLeaseObligations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_IncreaseInBorrowingCapacityEqualToPercentageOfFourQuarterEbdita" name="IncreaseInBorrowingCapacityEqualToPercentageOfFourQuarterEbdita" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_IncreaseInCoIncentiveUnitAndSubjectUnitLiabilityClassifiedAwards" name="IncreaseInCoIncentiveUnitAndSubjectUnitLiabilityClassifiedAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_IncreaseReserveForReturnsAndCancellations" name="IncreaseReserveForReturnsAndCancellations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_IncrementalCommonSharesAttributableToCarOfferIncentiveUnitsAndNoncontrollingInterest" name="IncrementalCommonSharesAttributableToCarOfferIncentiveUnitsAndNoncontrollingInterest" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_LineOfCreditFacilityIncreasedInMaximumBorrowingCapacity" name="LineOfCreditFacilityIncreasedInMaximumBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_LossContingentLiabilities" name="LossContingentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_NetIncomeLossAttributableToRedeemableNoncontrollingInterestDilutiveEffect" name="NetIncomeLossAttributableToRedeemableNoncontrollingInterestDilutiveEffect" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_NumberOfDaysGuaranteePeriod" name="NumberOfDaysGuaranteePeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_NumberOfInstallment" name="NumberOfInstallment" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_NumberOfMajorCustomers" name="NumberOfMajorCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_NumberOfVotesEntitledToStockholdersPerShare" name="NumberOfVotesEntitledToStockholdersPerShare" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_OtherAccruedExpensesAndOtherCurrentLiabilities" name="OtherAccruedExpensesAndOtherCurrentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_PaymentOfTaxDistributionToRedeemableNoncontrollingInterestHolders" name="PaymentOfTaxDistributionToRedeemableNoncontrollingInterestHolders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_PaymentOfWithholdingTaxesAndOptionCostsOnNetShareSettlementOfRestrictedStockUnitsAndStockOptions" name="PaymentOfWithholdingTaxesAndOptionCostsOnNetShareSettlementOfRestrictedStockUnitsAndStockOptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_PaymentsReceivedInAdvanceFromPaymentMadeToThirdPartyPaymentProcessor" name="PaymentsReceivedInAdvanceFromPaymentMadeToThirdPartyPaymentProcessor" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_PaymentsReceivedInAdvanceFromThirdPartyPayment" name="PaymentsReceivedInAdvanceFromThirdPartyPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_ReceivablesOffsetByPaymentsReceivedInAdvance" name="ReceivablesOffsetByPaymentsReceivedInAdvance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_RedeemableNoncontrollingInterestAccretionToRedemptionValue" name="RedeemableNoncontrollingInterestAccretionToRedemptionValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_ReserveForReturnsAndCancellationsCurrent" name="ReserveForReturnsAndCancellationsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="carg_TaxDistributionToRedeemableNoncontrollingInterestHolders" name="TaxDistributionToRedeemableNoncontrollingInterestHolders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="carg_UndistributedEarningsRatioUsedToCalculateAllocationToClassOfStock" name="UndistributedEarningsRatioUsedToCalculateAllocationToClassOfStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_DocumentAndEntityInformationLineItems" name="DocumentAndEntityInformationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_AdvertisingCustomersMember" name="AdvertisingCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_BrandMember" name="BrandMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CarOfferEquityIncentivePlansMember" name="CarOfferEquityIncentivePlansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CarOfferIncentiveUnitsAndSubjectUnitsMember" name="CarOfferIncentiveUnitsAndSubjectUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CarOfferIncentiveUnitsMember" name="CarOfferIncentiveUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CarOfferMember" name="CarOfferMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CoIncentiveUnitsSubjectUnitsAndNoncontrollingInterestMember" name="CoIncentiveUnitsSubjectUnitsAndNoncontrollingInterestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CustomerOneMember" name="CustomerOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_CustomerTwoMember" name="CustomerTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_DealerToDealerMember" name="DealerToDealerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_FinanceLeaseRightOfUseAssetsMember" name="FinanceLeaseRightOfUseAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_InstantCashMaxOfferMember" name="InstantCashMaxOfferMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_MarketBasedPerformanceAwardsMember" name="MarketBasedPerformanceAwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_MarketplaceMember" name="MarketplaceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_ServerAndComputerEquipmentMember" name="ServerAndComputerEquipmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_TwoThousandTwentyCarOfferEquityIncentivePlansMember" name="TwoThousandTwentyCarOfferEquityIncentivePlansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_TwoThousandTwentyFourPutRightMember" name="TwoThousandTwentyFourPutRightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_TwoThousandTwentyOneCarOfferEquityIncentivePlansMember" name="TwoThousandTwentyOneCarOfferEquityIncentivePlansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_TwoThousandTwentyOneCarOfferEquityIncentiveUnitsMember" name="TwoThousandTwentyOneCarOfferEquityIncentiveUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_VestingAgreementMember" name="VestingAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_WholesaleMember" name="WholesaleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_RecentAccountingPronouncementsNotYetAdoptedPolicyTextBlock" name="RecentAccountingPronouncementsNotYetAdoptedPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_RedeemableNoncontrollingInterestPolicyTextBlock" name="RedeemableNoncontrollingInterestPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_SignificantAccountingPoliciesPolicyTextBlock" name="SignificantAccountingPoliciesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="carg_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_DocumentAndEntityInformationTable" name="DocumentAndEntityInformationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="carg_ScheduleOfAccruedLiabilitiesAndOtherCurrentLiabilitiesTableTextBlock" name="ScheduleOfAccruedLiabilitiesAndOtherCurrentLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
