Find an Automotive Engineer for Vehicle Modification Certification
If you have modified your vehicle or are planning a modification that affects an ADR-covered system, you may need certification from a qualified engineer recognised in your state. This page provides a starting directory with links to official government directories.
For information on which modifications require certification, see state-by-state requirements.
Certifier map
Click a marker for details. For the most current listings, use the official government directories below.
Map data: OpenStreetMap. Locations are approximate.
Directory by state
New South Wales
| Business | Location | Scheme | Website |
|---|---|---|---|
| Gilani Engineering | Sydney | VSCCS | gilaniengineering.com.au |
| Mobility Engineering | Sydney (nationwide) | VSCCS, VASS, QLD AP | mobilityengineering.com.au |
| EVO Compliance | Sydney | VSCCS | evocompliance.com.au |
| Leeder Automotive | Sydney | VSCCS | leedervsccs.com.au |
| JR Auto Engineers | Port Stephens (mobile) | VSCCS | jrautoengineers.com.au |
| ADR Compliance Services | Sydney | VSCCS | adrcompliance.com.au |
Victoria
| Business | Location | Scheme | Website |
|---|---|---|---|
| Commercial Vehicle Compliance | Victoria (multi-state) | VASS, QLD AP, VSCCS | vehiclecompliance.net |
| BTT Engineering | VIC and TAS | VASS, NHVR AVE | bttengineering.com.au |
Queensland
| Business | Location | Scheme | Website |
|---|---|---|---|
| Transmod | Maryborough | TMR AP, NHVR AVE | transmod.com.au |
| Dr Tim's Auto Engineering | QLD | TMR AP | gvmupgrades.com |
| All Vehicle Mods QLD | QLD | TMR AP | allvehiclemodsqld.com.au |
| A to Z Imports | QLD | TMR AP (all codes) | atozimports.com.au |
| JRace Industries | QLD | TMR Accredited | jraceindustries.com.au |
Western Australia
| Business | Location | Scheme | Website |
|---|---|---|---|
| Packard Automotive | Perth | DTMI Signatory | packardauto.com.au |
| Heavy Vehicle Certifications | Perth | Federal ADR Consultant | hvc.net.au |
| Omega Vehicle Engineering | WA, SA, NT | Multi-state RES | omegavehicles.com |
South Australia, Tasmania, Northern Territory
| Business | Coverage | Scheme | Website |
|---|---|---|---|
| Omega Vehicle Engineering | SA, WA, NT | RES / Multi-state | omegavehicles.com |
| BTT Engineering | TAS, VIC | AVC, VASS | bttengineering.com.au |
Official government directories
- NSW: VSCCS Certifier List (Service NSW)
- VIC: VASS Signatory Contact List (Transport Victoria)
- QLD: Approved Person Search (QLD Gov)
- SA: Vehicle Standards (SA Gov)
- WA: Automotive Consultants (Transport WA)
- TAS: Modification Inspections (Transport TAS)
- NT: Approved Engineers (NT Gov)
- ACT: Modified Light Vehicles (Access Canberra)
Before you book a certifier
Consult before you build. Always speak to a certifier before starting significant work. Rectifying after the fact is significantly more expensive.
Verify their licence categories. Certifiers are only authorised for specific modification types. Confirm they hold the correct category for your specific modification.
Document your work. Keep photographs of each stage, receipts, and product compliance documentation.
Use ADR compliant parts. Starting with independently assessed parts makes certification simpler. Products with no compliance documentation create additional work and cost.
Expect variable pricing. Typical costs range from $500 for a straightforward modification to $5,000+ for complex builds.
Disclaimer: PVS Automotive does not endorse or guarantee the services of any certifier listed on this page. Always verify current status through the official government directory. Last reviewed April 2026.