<SEC-DOCUMENT>0000899243-20-029585.txt : 20201028
<SEC-HEADER>0000899243-20-029585.hdr.sgml : 20201028
<ACCEPTANCE-DATETIME>20201028210359
ACCESSION NUMBER:		0000899243-20-029585
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200726
FILED AS OF DATE:		20201028
DATE AS OF CHANGE:		20201028

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bracke Peter
		CENTRAL INDEX KEY:			0001752104

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38636
		FILM NUMBER:		201270198

	MAIL ADDRESS:	
		STREET 1:		LA PIECE 16
		CITY:			ROLLE
		STATE:			V8
		ZIP:			1180

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Garrett Motion Inc.
		CENTRAL INDEX KEY:			0001735707
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLE PARTS & ACCESSORIES [3714]
		IRS NUMBER:				824873189
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		LA PIECE 16
		CITY:			ROLLE
		STATE:			V8
		ZIP:			1180
		BUSINESS PHONE:		41-21-695-3000

	MAIL ADDRESS:	
		STREET 1:		LA PIECE 16
		CITY:			ROLLE
		STATE:			V8
		ZIP:			1180

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Garrett Transportation Systems Inc.
		DATE OF NAME CHANGE:	20180327
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-07-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001752104</rptOwnerCik>
            <rptOwnerName>Bracke Peter</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GARRETT MOTION INC.</rptOwnerStreet1>
            <rptOwnerStreet2>LA PIECE 16</rptOwnerStreet2>
            <rptOwnerCity>ROLLE</rptOwnerCity>
            <rptOwnerState>V8</rptOwnerState>
            <rptOwnerZipCode>1180</rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP, Chief Transformation Off.</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-07-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1298</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.10</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>209533</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-10-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>556</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.505</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>208977</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares withheld by Garrett Motion Inc. (&quot;Garrett&quot;) for payment of the tax liability incurred upon the vesting of a restricted stock unit award granted on October 1, 2018 in connection with the conversion of certain equity and cash incentive awards previously granted by Honeywell International Inc. (&quot;Honeywell&quot;) into equity awards of Garrett in connection with the legal and structural separation of Garrett from Honeywell.</footnote>
        <footnote id="F2">The price is based on the high-low average price on September 24, 2020, the vesting date of the restricted stock unit award. The shares were withheld on October 26, 2020, after receipt of bankruptcy court approval.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jerome Maironi, Attorney-in-Fact</signatureName>
        <signatureDate>2020-10-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
