Light Vehicle Modification Approval - Western Australia


You may need this approval if you intend to modify a vehicle or trailer. Approval is needed for any alteration to a vehicle or trailer from:

  • the manufacturers specifications
  • its form when it was first licensed.

The type of modification you intend to make to your vehicle or trailer will vary your need for this approval. There are three categories of modifications:

  • minor (e.g. alarm systems, additional lighting, like-for-like engine change, etc.)
  • simple (e.g. transmission substitution, battery relocation, lowering vehicle height, etc.)
  • complex (e.g. installing a supercharger or turbocharger, increasing engine power by more than 20%, etc.).

Minor modifications do not need approval or inspection, simple modifications only need an inspection, and complex modifications need approval and engineering certification.

Service type


A licence defines the need to obtain recognition / certification and registration to undertake a certain business activity.

Eligibility requirements

Please consult the Contact Officer for more information regarding eligibility requirements.


Fees Details for this service in table format.

Task Type Business Structure Description
Apply Application All

Fees will vary depending on your circumstances. Please consult the Contact Officer for more information.

Act(s) name

Road Traffic (Vehicles) Act 2012 Western Australia

Regulation(s) name

Road Traffic (Vehicles) Regulations 2014 Western Australia

Application process


You may need to provide additional information, such as test reports.

Administering agency

Department of Transport

Transport Services

Driver and Vehicle Services

Contact details

Contact Email, Phone and Address Details for this service in simple two column table format, header then data.