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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-10-20</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001569241</rptOwnerCik>
            <rptOwnerName>Newtyn Management, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 EAST 42ND STREET, 9TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001548707</rptOwnerCik>
            <rptOwnerName>NEWTYN PARTNERS, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 EAST 42ND STREET, 9TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10165</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001548709</rptOwnerCik>
            <rptOwnerName>NEWTYN TE PARTNERS, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 EAST 42ND STREET, 9TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001789643</rptOwnerCik>
            <rptOwnerName>Newtyn Capital Partners, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 EAST 42ND STREET, 9TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10165</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001789647</rptOwnerCik>
            <rptOwnerName>Ledo Capital, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 EAST 42ND STREET, 9TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10165</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001788608</rptOwnerCik>
            <rptOwnerName>Levy Noah G.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 EAST 42ND STREET, 9TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10165</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1655000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Newtyn Partners, LP (&quot;NP&quot;) and Newtyn TE Partners, LP (&quot;NTE&quot;) directly hold 965,988 and 689,012 shares, respectively, of common stock of Garrett Motion Inc. (the &quot;Company&quot;). Newtyn Management, LLC (&quot;NM&quot;) is the investment manager of NP and NTE. Newtyn Capital Partners, LP (&quot;NCP&quot;) is the general partner to each of NP and NTE. Ledo Capital, LLC (&quot;Ledo&quot;) is the general partner to NCP. Mr. Noah Levy is managing member to NM. NP, NTE, NM, NCP, Ledo and Mr. Levy are collectively referred to as the &quot;Reporting Persons.&quot;</footnote>
    </footnotes>

    <remarks>The Reporting Persons are jointly filing this Form 3. The Reporting Persons may be deemed to be members of a group (for purposes of Rule 13d-3 under the Securities Exchange Act of 1934) with the other shareholders of the Company party to the Amended and Restated Coordination Agreement, dated October 20, 2020, filed as Exhibit 99.1 to the Reporting Persons' Schedule 13D filed on October 26, 2020. The Reporting Persons disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.</remarks>

    <ownerSignature>
        <signatureName>Newtyn Partners, LP, By: Newtyn Management, LLC, Investment Manager, By: /s/ Eugene Dozortsev, Name: Eugene Dozortsev, Title: Authorized Signatory</signatureName>
        <signatureDate>2020-10-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Newtyn TE Partners, LP, By: Newtyn Management, LLC, Investment Manager, By: /s/ Eugene Dozortsev, Name: Eugene Dozortsev, Title: Authorized Signatory</signatureName>
        <signatureDate>2020-10-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Newtyn Management, LLC, /s/ Eugene Dozortsev, Eugene Dozortsev, Authorized Signatory</signatureName>
        <signatureDate>2020-10-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Newtyn Capital Partners, LP, By: Ledo Capital, LLC, General Partner, By: /s/ Eugene Dozortsev, Name: Eugene Dozortsev, Title: Authorized Signatory</signatureName>
        <signatureDate>2020-10-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Ledo Capital, LLC, By: /s/ Eugene Dozortsev, Name: Eugene Dozortsev, Title: Authorized Signatory</signatureName>
        <signatureDate>2020-10-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Noah Levy</signatureName>
        <signatureDate>2020-10-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
