do i need roadworthy certificate

Short answer: it depends on your state or territory and what you’re doing with the vehicle.

You’ll typically need some form of roadworthy/safety inspection when transferring registration, re‑registering an unregistered car, or clearing a defect notice.

Requirements, names and intervals vary—check your local authority (VicRoads, Transport for NSW, TMR QLD, etc.) before you book a test or stick a “for sale” sign on the window.

If in doubt, a fresh inspection can smooth a sale and save the “sorry mate, not roadworthy” haggling routine.