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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-03-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001405424</issuerCik>
        <issuerName>VISION INDUSTRIES CORP</issuerName>
        <issuerTradingSymbol>VICC.OB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001537416</rptOwnerCik>
            <rptOwnerName>Novium Opportunity Umbrella SICAV PLC - Quality Investment Fund</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>LEVEL 6, THE MALL OFFICES</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FLORIANA, MALTA</rptOwnerCity>
            <rptOwnerState>O1</rptOwnerState>
            <rptOwnerZipCode>FRM 147</rptOwnerZipCode>
            <rptOwnerStateDescription>MALTA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001537379</rptOwnerCik>
            <rptOwnerName>Cortes Raul</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SEESTRASSE 45, POSTFACH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ZOLLIKON</rptOwnerCity>
            <rptOwnerState>V8</rptOwnerState>
            <rptOwnerZipCode>8702</rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001537415</rptOwnerCik>
            <rptOwnerName>Brueckner Paolo</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SEESTRASSE 45, POSTFACH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ZOLLIKON</rptOwnerCity>
            <rptOwnerState>V8</rptOwnerState>
            <rptOwnerZipCode>8702</rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001537418</rptOwnerCik>
            <rptOwnerName>Novium AG</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>SEESTRASSE 45, POSTFACH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ZOLLIKON</rptOwnerCity>
            <rptOwnerState>V8</rptOwnerState>
            <rptOwnerZipCode>8702</rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2013-03-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2005000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.12</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24694722</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">In addition to Novium Opportunity Umbrella SICAV PLC-Quality Investment Fund, this form is being filed jointly by Novium AG, Paolo Bruckner and Raul Cortes, the business address of each of whom is Seestrasse 45, 8702 Zollikon, Switzerland.  Novium AG is the investment manager of Novium Opportunity Umbrella SICAV PLC-Quality Investment Fund, Paolo Bruckner is the owner of a majority of the voting shares of Novium AG, and Raul Cortes is the asset manager of Novium Opportunity Umbrella SICAV PLC-Quality Investment Fund. As a result, each of them may be deemed to have shared voting power and investment power over securities beneficially owned by Novium Opportunity Umbrella SICAV PLC-Quality Investment Fund and therefore may be deemed to be indirect beneficial owners of securities owned by it.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Paolo Brueckner (for Novium Opportunity Umbrella SICAV PLC-Quality Investment Fund)</signatureName>
        <signatureDate>2013-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Paolo Brueckner (for Novium AG)</signatureName>
        <signatureDate>2013-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Raul Cortes (for Noviuim AG)</signatureName>
        <signatureDate>2013-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Paolo Brueckner</signatureName>
        <signatureDate>2013-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Raul Cortes</signatureName>
        <signatureDate>2013-05-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
