Modify or build a vehicle
These pages provide information about vehicle modifications and custom vehicle builds.
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Learn about and obtain a Vehicle Assessment Signatory Scheme (VASS) approval certificate.
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Information on the rules for modifying your car, motorcycle light truck or trailer under 4.5T gross vehicle mass (GVM).
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If the description of your vehicle has changed as a result of modifications, VicRoads must be notified within 14 days of the change. If the vehicle's engine number changes VicRoads must be notified within 7 days.
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Requirements for modifying a heavy truck or trailer over 4.5 tonnes Gross Vehicle Mass (GVM).
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Learn more about the most common types of alternative fuels used in vehicles.
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Requirements for converting your vehicle to a campervan or motorhome.
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Information on the eligibility and construction requirements for Street Rods and Individually Constructed Vehicles (ICVs).
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All vehicles in Victoria must conform to construction standards ensuring vehicles provide drivers and passengers with a minimum level of safety.
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Installation of gas fuel systems and all ongoing repairs and maintenance must be undertaken by a VicRoads-approved service provider.