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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2017-04-27</periodOfReport>

    <dateOfOriginalSubmission>2017-04-27</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001690820</issuerCik>
        <issuerName>CARVANA CO.</issuerName>
        <issuerTradingSymbol>CVNA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001700538</rptOwnerCik>
            <rptOwnerName>GILL DANIEL J.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CARVANA CO.</rptOwnerStreet1>
            <rptOwnerStreet2>4020 E. INDIAN SCHOOL ROAD</rptOwnerStreet2>
            <rptOwnerCity>PHOENIX</rptOwnerCity>
            <rptOwnerState>AZ</rptOwnerState>
            <rptOwnerZipCode>85018</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Product Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Class B Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.00</value>
                <footnoteId id="F1"/>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Mr. Gill was granted 75,000 Class B Units on April 27, 2017 with a participation threshold of $12.00; 15,000 will vest on February 1, 2018 and 1,250 will vest on the first of each month thereafter.</footnote>
        <footnote id="F2">Pursuant to the Exchange Agreement, dated April 27, 2017, by and among the Issuer, Carvana Co. Sub LLC, Carvana Group, LLC and the members of Carvana Group, LLC, Class B Units are exchangeable for a number of shares of the Issuer's Class A Common Stock equal to the Class A Common Stock share value less the applicable participation threshold multiplied by 0.8 times the number of Class B Units being exchanged, divided by the Class A Common Stock share value.</footnote>
        <footnote id="F3">The participation threshold for these Class B Units was incorrectly reported in the reporting person's original Form 3 filed on April 27, 2017.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Paul Breaux, by Power of Attorney for Daniel J. Gill</signatureName>
        <signatureDate>2017-07-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
