Want to keep driving your car from November 1? Make sure it doesn't have an alpha inflator, or it can't be registered.

Owners of vehicles still fitted with the most dangerous 'alpha' Takata airbag inflators won't be able to register their car in South Australia from November 1.

The move is the first of its kind in Australia, and will be enforced by the South Australian Registrar of Motor Vehicles.

Owners of the affected vehicles should have been contacted multiple times by the manufacturers, but will also receive a message from the SA Registrar giving them 30 days to provide evidence the airbag has been replaced.

Tony Weber, Federal Chamber of Automotive Industries (FCAI) chief executive, explained the threat posed by alpha airbags at the launch of www.IsMyAirbagSafe.com.au earlier this year: