The laws do vary from state to state and you should always contact the road transport authority in your state or territory for further details of any roadworthy requirements.
However, from what research we have done, the followings seems to apply:
You will require a roadworthy certificate to sell your vehicle.
A roadworthy certificate is required when transferring a vehicle in your name.
A roadworthy certificate is required when transferring a vehicle older than 6 years in your name.
- ALL OTHER STATES
You won’t need a roadworthy certificate to sell your car in other states and territories.
However there are circumstances when roadworthy certificates are required such as when a vehicle is registered in another state or based on the age or condition of your vehicle.