-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IM6/VnsmpAaILiE1R39tiVV0KxGaNDe8ivY4JRLkFnRvixgUAaVj1SiY1FMvRMb9
 qhBrP7aOG4I0/yt4769obA==

<SEC-DOCUMENT>0001021089-04-000001.txt : 20040406
<SEC-HEADER>0001021089-04-000001.hdr.sgml : 20040406
<ACCEPTANCE-DATETIME>20040406194858
ACCESSION NUMBER:		0001021089-04-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030903
FILED AS OF DATE:		20040406

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ARGYROS GEORGE L
		CENTRAL INDEX KEY:			0001021089

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21810
		FILM NUMBER:		04721225

	BUSINESS ADDRESS:	
		STREET 1:		ARNEL & AFFILIATES
		STREET 2:		950 S COAST DR SUITE 200
		CITY:			COSTA MESA
		STATE:			CA
		ZIP:			92626

	MAIL ADDRESS:	
		STREET 1:		ARNEL & AFFILIATES
		STREET 2:		950 SOUTH COAST DR SUITE 200
		CITY:			COSTA MESA
		STATE:			CA
		ZIP:			92626

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERIGON INC
		CENTRAL INDEX KEY:			0000903129
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLES & PASSENGER CAR BODIES [3711]
		IRS NUMBER:				954318554
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5462 IRWINDALE AVENUE
		CITY:			IRWINDALE
		STATE:			CA
		ZIP:			91760-
		BUSINESS PHONE:		6268157400

	MAIL ADDRESS:	
		STREET 1:		5462 IRWINDALE AVE
		CITY:			IRWINDALE
		STATE:			CA
		ZIP:			91706

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WESTAR CAPITAL II LLC
		CENTRAL INDEX KEY:			0001285934

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21810
		FILM NUMBER:		04721224

	BUSINESS ADDRESS:	
		STREET 1:		949 SOUTH COAST DR
		CITY:			COSTA MESA
		STATE:			CA
		ZIP:			92626
		BUSINESS PHONE:		7144815160

	MAIL ADDRESS:	
		STREET 1:		949 SOUTH COAST DR
		CITY:			COSTA MESA
		STATE:			CA
		ZIP:			92626
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2003-09-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000903129</issuerCik>
        <issuerName>AMERIGON INC</issuerName>
        <issuerTradingSymbol>ARGN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001021089</rptOwnerCik>
            <rptOwnerName>ARGYROS GEORGE L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ARNEL &amp; AFFILIATES</rptOwnerStreet1>
            <rptOwnerStreet2>950 SOUTH COAST DR SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92626</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001285934</rptOwnerCik>
            <rptOwnerName>WESTAR CAPITAL II LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>949 SOUTH COAST DR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92626</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>2003-09-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3136</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.67</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>153136</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.67</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2003-09-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3136</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>1999-06-08</value>
            </exerciseDate>
            <expirationDate>
                <value>2004-09-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3136</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>96803</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This number does not include 4,500 shares of Series A Preferred Stock owned directly by Westar Capital II, LLC which are currently convertible into 2,686,567 shares of the Issuer's Common Stock.</footnote>
        <footnote id="F2">These shares are owned directly by Westar Capital II, LLC, a ten percent owner of the Issuer and indirectly by George L. Argyros, who has a controlling interest in Westar Capital Associates II, LLC, the managing member of Westar Capital II, LLC.  George L. Argyros disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">This number includes 83,333 shares of the Issuer's Common Stock underlying warrants owned directly by Westar Capital II, LLC and 13,431 shares of the Issuer's Common Stock underlying contingent warrants owned directly by Westar II, LLC.  This number is subject to adjustment as provided in the warrants.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ George L. Argyros</signatureName>
        <signatureDate>2004-03-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ John Clark, managing member of Westar Capital Associates II, LLC, the managing member of Westar Capital II, LLC</signatureName>
        <signatureDate>2004-03-17</signatureDate>
    </ownerSignature>
</ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----