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<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-02-13T22:11:35.3896258+00:00 -->
<!-- Version            : 5.0.1.321 -->
<!-- Package ID         : e775ee0369394d2ba4920c41c073f311 -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="carg_ReconciliationOfNetLossIncomeToNetLossIncomeAttributeToCommonStockholdersAbstract" name="ReconciliationOfNetLossIncomeToNetLossIncomeAttributeToCommonStockholdersAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="carg_TemporaryEquityStockIssuedDuringPeriodShareNewIssues" name="TemporaryEquityStockIssuedDuringPeriodShareNewIssues" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
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  <xsd:element id="carg_InternationalSegmentMember" name="InternationalSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="carg_UnitedStatesSegmentMember" name="UnitedStatesSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="carg_AutoListIncMember" name="AutoListIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xsd:schema>
