-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 YrjtNlg5qOPNvXiEap60Ng==

<SEC-DOCUMENT>0001209191-06-016715.txt : 20060309
<SEC-HEADER>0001209191-06-016715.hdr.sgml : 20060309
<ACCEPTANCE-DATETIME>20060309203207
ACCESSION NUMBER:		0001209191-06-016715
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060309
FILED AS OF DATE:		20060309
DATE AS OF CHANGE:		20060309

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PENSKE CORP
		CENTRAL INDEX KEY:			0000849531
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12297
		FILM NUMBER:		06677380

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

	MAIL ADDRESS:	
		STREET 1:		2555 TELEGRAPH ROAD
		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>2006-03-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000849531</rptOwnerCik>
            <rptOwnerName>PENSKE CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2555 TELEGRAPH ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BLOOMFIELD HILLS</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48302</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-03-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>460000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>42.82</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11154021</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Subsidiary</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These 460,000 securities were purchased by a subsidiary of Penske Corporation from Roger S. Penske.</footnote>
        <footnote id="F2">Penske Corporation also reports beneficial ownership of 7,478,386 shares of Voting Common Stock  attributable to Penske Corporation's ownership interest in International Motor Cars Group I, L.L.C. (&quot;IMCG I&quot;).  Penske Corporation is a non-managing member of IMCG I.  Pursuant to the IMCG I operating agreement, the number of shares of equity securities of the Company attributable to Penske Corporation's membership interest in IMCG I shall be reduced at the time of each distribution made by IMCG I to Penske Corporation by the number of shares actually distributed to Penske Corporation and by the number of shares representing the carried interest, if any, attributable to the managing member of IMCG I.</footnote>
        <footnote id="F3">Penske Corporation disclaims beneficial ownership of the securities held by IMCG I, except to the extent of its &quot;pecuniary interest&quot; (as such term is defined in Rule 16a-1 under the Securities Exchange Act of 1934, as amended), if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 purposes and for all other purposes.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Robert H. Kurnick, Jr., President</signatureName>
        <signatureDate>2006-03-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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