<SUBMISSION>
<ACCESSION-NUMBER>0001209191-08-058068
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20081028
<FILING-DATE>20081030
<DATE-OF-FILING-DATE-CHANGE>20081030
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Meekin Peter Thomas
<CIK>0001341651
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-51598
<FILM-NUMBER>081152417
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>802-442-0642
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>7 MONUMENT CIRCLE
<CITY>BENNINGTON
<STATE>VT
<ZIP>05201
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>IROBOT CORP
<CIK>0001159167
<ASSIGNED-SIC>3630
<IRS-NUMBER>770259335
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>8 CROSBY DRIVE
<CITY>BEDFORD
<STATE>MA
<ZIP>01730
<PHONE>781-430-3000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>8 CROSBY DRIVE
<CITY>BEDFORD
<STATE>MA
<ZIP>01730
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-10-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001159167</issuerCik>
        <issuerName>IROBOT CORP</issuerName>
        <issuerTradingSymbol>IRBT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001341651</rptOwnerCik>
            <rptOwnerName>Meekin Peter Thomas</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TRIDENT CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>325 RIVERSIDE AVENUE</rptOwnerStreet2>
            <rptOwnerCity>WESTPORT</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06880</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>
            </securityTitle>
            <transactionDate>
                <value>2008-10-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>353</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10518</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-10-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>466195</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4793</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares were received by the reporting person in his capacity as a constituent partner or member of one or more of the funds described in footnote 2, upon distribution to the partners or members in accordance with the funds' operative agreements.</footnote>
        <footnote id="F2">Pro-rata distribution in-kind without consideration to the partners of the following funds: 421,928 shares to the partners of Trident Capital Fund-V, L.P.; 32,055 shares to the partners of Trident Capital Parallel Fund-V, C.V.; 12,212 shares to the partners of Trident Capital Fund-V Principals Fund, L.P.; and 454 shares to the members of Trident Capital Management-V, L.L.C.</footnote>
        <footnote id="F3">Consists of shares held by Trident Capital Fund-V, L.P., Trident Capital Fund-V Affiliates Fund, L.P., Trident Capital Fund-V Affiliates Fund (Q), L.P., Trident Capital Fund-V Principals Fund, L.P. and Trident Capital Parallel Fund-V, C.V. The reporting person is one of six Members of Trident Capital Management-V, L.L.C., the sole general partner of Trident Capital Fund-V, L.P., Trident Capital Fund-V Affiliates Fund, L.P., Trident Capital Fund-V Affiliates Fund (Q), L.P., and Trident Capital Fund-V Principals Fund, L.P. and the sole investment general partner of Trident Capital Parallel Fund-V, C.V.  The reporting person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of all of the reported shares for purposes of Section 16 or any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Glen D. Weinstein,
Attorney-in-Fact</signatureName>
        <signatureDate>2008-10-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
