do you need a safety certificate to sell a car in qld

In Queensland, yes—you need a Safety Certificate (roadworthy) before you advertise a registered car for sale.

Get it from an Approved Inspection Station and display it on the vehicle when it's offered for sale.

It applies to most light vehicles, including cars, motorbikes, and trailers/caravans over 750 kg ATM, up to 4.5 t GVM.

For private sellers it's valid for 2 months or 2,000 km; licensed dealers get 3 months or 1,000 km—whichever comes first.

Selling it unregistered? You don't need one to sell, but you will to re-register, so budget for it and avoid a bureaucratic tango.