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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-05-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001340786</issuerCik>
        <issuerName>Fuel Systems Solutions, Inc.</issuerName>
        <issuerTradingSymbol>FSYS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001349005</rptOwnerCik>
            <rptOwnerName>Becker Steven R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 CRESCENT COURT, SUITE 230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2015-05-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6054</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.001</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1900619</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">In accordance with the director compensation policy of Fuel Systems Solutions, Inc. (the &quot;Issuer&quot;), these restricted shares of common stock, par value $0.001 per share (the &quot;Common Stock&quot;), of the Issuer represent an annual grant of restricted stock to Mr. Becker for service as an independent director. This restricted stock grant will vest in full on May 18, 2016.</footnote>
        <footnote id="F2">Represents the transaction reported in this Form 4, such restricted shares being held directly by Mr. Becker (the &quot;Becker Shares&quot;), as well as Common Stock of the Issuer directly beneficially owned by Becker Drapkin Partners (QP), L.P. (&quot;Becker Drapkin QP&quot;) (1,369,436 shares) and Becker Drapkin Partners, L.P. (&quot;Becker Drapkin, L.P.&quot;) (156,483 shares), and Common Stock directly held by a managed account on behalf of an investment advisory client (the &quot;Managed Account&quot;) of Becker Drapkin Management, L.P. (&quot;BD Management&quot;) (368,646 shares) (all shares held by Becker Drapkin QP, Becker Drapkin, L.P., the Managed Account and BD Management, collectively, the &quot;BD Shares&quot;). (Continued in Footnote 3)</footnote>
        <footnote id="F3">Mr. Becker may be deemed to beneficially own the BD Shares as he is a co-managing member of BC Advisors, LLC, which is the general partner of BD Management (of which Mr. Becker is a limited partner), and BD Management is the general partner of, and investment manager for, each of Becker Drapkin QP and Becker Drapkin, L.P., and the investment manager of the Managed Account. Mr. Becker disclaims beneficial ownership in the BD Shares except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Adam J. Brunk, attorney-in-fact</signatureName>
        <signatureDate>2015-06-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
