TowSense modification pathways
Your preliminary modification pathway
For passenger cars, SUVs and light commercial vehicles only. Your answers stay in this page and are not saved to TowSense. No registration number, VIN or contact details are needed.
Prepare a modification evidence worksheetFree evidence preparation for four modification groups across all eight Australian states and territories. No approval or certification is provided.
Assess your complete build
Review your accessories, touring load and towing setup with the existing automated advisory assessment.
Complete Vehicle Build Assessment — $149 AUDAdvisory report. Engineering certification and inspection are separate.
Official sources
- Access Canberra — Modified light vehicles
- NSW Government — Modified and non-standard vehicles
- Transport Victoria — VASS approval certificate
- Queensland TMR — Vehicle modifications
- SA Government — Apply to modify a light motor vehicle
- Transport WA — Light vehicle modification requirements
- Transport Tasmania — Modification inspections (AVCAIS)
- NT Government — Approval processes for modifications
- Australian Government — VSB 14 / NCOP
Sources checked 2026-10-19. Confirm current requirements before work.
Preliminary advisory guidance only. This is not engineering certification, registration approval, a roadworthiness inspection or a finding that your vehicle is safe or legal. Confirm the complete modification package with the relevant road authority and an appropriately authorised certifier before proceeding. The paid TowSense assessment is also advisory.