-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 LUvCHyyg9/M3LerlsLXn0EIqMN0W6rvcXZBjprn5hb3Yx/vKoQY7zasM+Fmh3/bZ
 UIj7evCYsh32q2/GQm5lDg==

<SEC-DOCUMENT>0001209191-05-061036.txt : 20051205
<SEC-HEADER>0001209191-05-061036.hdr.sgml : 20051205
<ACCEPTANCE-DATETIME>20051205130222
ACCESSION NUMBER:		0001209191-05-061036
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051201
FILED AS OF DATE:		20051205
DATE AS OF CHANGE:		20051205

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LOVEJOY WILLIAM J
		CENTRAL INDEX KEY:			0001283649

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12297
		FILM NUMBER:		051243455

	MAIL ADDRESS:	
		STREET 1:		2555 TELEGRAPH ROAD
		CITY:			BLOOMFIELDS HILLS
		STATE:			MI
		ZIP:			48302

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED AUTO GROUP INC
		CENTRAL INDEX KEY:			0001019849
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-AUTO DEALERS & GASOLINE STATIONS [5500]
		IRS NUMBER:				223086739
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2555 TELEGRAPH RD
		CITY:			BLOOMFIELD HILLS
		STATE:			MI
		ZIP:			48302-0954
		BUSINESS PHONE:		248-648-2500

	MAIL ADDRESS:	
		STREET 1:		2555 TELEGRAPH RD
		CITY:			BLOOMFIELD HILLS
		STATE:			MI
		ZIP:			48302-0954
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-12-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001019849</issuerCik>
        <issuerName>UNITED AUTO GROUP INC</issuerName>
        <issuerTradingSymbol>UAG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001283649</rptOwnerCik>
            <rptOwnerName>LOVEJOY WILLIAM J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2555 TELEGRAPH RD.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BLOOMFIELD HILLS</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48302</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Deferred Stock Units (Phantom Stock)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-12-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4.65</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4.65</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1426.67</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">One for one.</footnote>
        <footnote id="F2">The deferred stock units are exercisable upon the termination of the reporting person's service from the Company's Board of Directors.</footnote>
        <footnote id="F3">Not applicable.</footnote>
        <footnote id="F4">Price is not relevent to this transaction.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Shane M. Spradlin by Power of Attorney</signatureName>
        <signatureDate>2005-12-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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