Light vehicle modifications
The Motor vehicle modifications booklet (PDF**, 433KB) provides legal and safety guidelines for people wishing to modify vehicles with a gross mass up to and including 4.5 tonnes from the manufacturer's original specifications. The guidelines also include motorbikes.The Motor Vehicle Modification Application form (F1854) is used when applying to the Department of Transport and Main Roads for specific modification (see below).
Modifications can be approved in three ways:
- Minor modifications
Many minor modifications can be carried out without obtaining written approval. Details of these modifications are outlined in section one of the booklet. - Complex modifications
Complex modifications such as engine, gearbox and rear axle, steering and brake replacements require approval from an Approved Person. Details of these modifications and the Approved Person Scheme are outlined in section two of the booklet. - Specific modifications
Some owners require approval for modifications which may be outside the scope of the Approved Person Scheme. Details of how to apply for these modifications are outlined in section three of the booklet.
Learner drivers
Research shows a greater crash risk for young drivers when driving high-powered and performance vehicles. Provisional licence holders (P1 and P2) under the age of 25 are not allowed to drive high-powered and performance vehicles.
**While this department has taken every possible precaution with the creation of these files, they are downloaded and used at your own risk. Adobe Reader is needed to open and print Portable Document Format (PDF) files and is free to download from http://www.adobe.com/products/acrobat/readstep2.html. Various tools to enable access to these files for people using a screen reader can be found at http://access.adobe.com. Further information is available from the"Help with downloading, reading and printing PDF".
Last updated 05 June 2009
Other languages