<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-01-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001759008</issuerCik>
        <issuerName>CarLotz, Inc.</issuerName>
        <issuerTradingSymbol>LOTZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001841999</rptOwnerCik>
            <rptOwnerName>Carrel Steven G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CARLOTZ, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>611 BAINBRIDGE STREET, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>RICHMOND</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23224</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-01-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20739678</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20739678</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Foonote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Earnout Rights</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-01-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2287420</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-01-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2287420</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2287420</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Foonote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Received in exchange for 2,034,751 shares of common stock of CarLotz Group, Inc. (f/k/a CarLotz, Inc. (&quot;Former CarLotz&quot;), pursuant to an Agreement and Plan of Merger, dated as of October 21, 2020 (as amended by Amendment No. 1, dated December 16, 2020, the &quot;Merger Agreement&quot;), by and among Former CarLotz, Acamar Partners Acquisition Corp. (&quot;Acamar Partners&quot;) and Acamar Partners Sub, Inc. (&quot;Merger Sub&quot;). Merger Sub merged (the &quot;Merger&quot;) with and into Former CarLotz, with Former CarLotz surviving the merger as a wholly owned subsidiary of Acamar Partners (which subsequently changed its name to &quot;CarLotz, Inc..&quot;, the &quot;Issuer&quot;).</footnote>
        <footnote id="F2">Represents securities held directly by TRP Capital Partners, LP (&quot;TRP&quot;). The Reporting Person is a Managing Director of TRP. The Reporting Person may be deemed to be the beneficial owner of all or a portion of the securities reported herein. The filing of this statement shall not be deemed to be an admission that the Reporting Person is subject to Section 16 of the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;) or that, for purposes of Section 16 of the Exchange Act or otherwise, the Reporting Person is the beneficial owner of any securities reported herein, and the Reporting Person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">Reflects Earnout Rights acquired pursuant to the Merger Agreement. Pursuant to earnout provisions in the Merger Agreement, the holder is entitled to receive such shares of Class A Common Stock if, from the closing of the Merger until the fifth anniversary thereof, the closing share price of the Class A Common Stock exceeds the following thresholds. One-half will be issued if the closing share price of the Class A Common Stock exceeds $12.50 for any 20 trading days within any 30 trading day period and one-half will be issued if the closing share price of the Class A Common Stock exceeds $15.00 for any 20 trading days within any 30 trading day period.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Rebecca C. Polak as attorney-in-fact for Mr. Carrel Rebecca C. Polak</signatureName>
        <signatureDate>2021-01-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
