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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-04-30</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001735707</issuerCik>
        <issuerName>Garrett Motion Inc.</issuerName>
        <issuerTradingSymbol>GTX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001605056</rptOwnerCik>
            <rptOwnerName>Adamczyk Darius</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>300 SOUTH TRYON STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000773840</rptOwnerCik>
            <rptOwnerName>HONEYWELL INTERNATIONAL INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>300 SOUTH TRYON STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2896116</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Series B Preferred Stock</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>834800000</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Cumulative Convertible Preferred Stock</value>
                <footnoteId id="F3"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.25</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4196330</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of common stock, par value $0.001 per share (the &quot;Common Stock&quot;), of Garrett Motion Inc. (the &quot;Company&quot;) held by Honeywell International Inc. (&quot;Honeywell&quot;) that Honeywell received for each of the 2,896,116 shares of common stock, $0.001 par value per share, Honeywell owned in the pre-reorganized Company in connection with the Company's emergence from bankruptcy on April 30, 2021.</footnote>
        <footnote id="F2">The shares of Series B Preferred Stock, par value $0.001 per share (the &quot;Series B Preferred Stock&quot;), are held by Honeywell Holdings International Inc, a wholly-owned subsidiary of Honeywell, and are not registered pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;), and are not convertible into shares of Common Stock or any other securities of the Company.</footnote>
        <footnote id="F3">Represents shares of Series A Cumulative Convertible Preferred Stock, par value $0.001 per share (the &quot;Series A Preferred Stock&quot;), of the Company held by Honeywell. The shares of Series A Preferred Stock are convertible into shares of Common Stock of the Company upon the events specified in the Company's Certificate of Designations of Series A Cumulative Convertible Preferred Stock (the &quot;Series A Certificate of Designations&quot;). The Series A Preferred Stock does not have an expiration date.</footnote>
        <footnote id="F4">Honeywell may convert at its option its shares of Series A Preferred Stock into shares of Common Stock at a conversion rate equal to $5.25, which is the stated amount of each share of Series A Preferred Stock, divided by $5.25, which is the conversion price of each share of Series A Preferred Stock (subject to adjustments as described in the Series A Certificate of Designations).</footnote>
        <footnote id="F5">Darius Adamczyk is the Chief Executive Officer of Honeywell and, in such capacity, may be deemed to have voting and/or dispositive power with respect to the securities owned by Honeywell in the Company. Mr. Adamczyk expressly disclaims beneficial ownership of the shares held by Honeywell.</footnote>
    </footnotes>

    <remarks>Darius Adamczyk, the Chief Executive Officer of Honeywell, was appointed to the board of directors of the Company as an appointee of Honeywell. As a result, Honeywell may be deemed to be a &quot;director by deputization&quot; of the Company for purposes of Section 16 of the Exchange Act.</remarks>

    <ownerSignature>
        <signatureName>/s/ Darius Adamczyk</signatureName>
        <signatureDate>2021-05-10</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Anne T. Madden, Senior Vice President and General Counsel of Honeywell International Inc.</signatureName>
        <signatureDate>2021-05-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
