New data from the Australian Competition and Consumer Commission has shown almost two million Takata airbags still need replacing.
While 1.1 million faulty Takata airbags have been replaced over the past 12 months, ACCC chair Delia Rickard says 1.8 million vehicles still have the recalled airbags.
"The airbags degrade over time and can become lethal by misdeploying and firing metal shards at the car’s occupants,” Ms Rickard said.
The most dangerous Takata airbag, the "alpha" airbag, was fitted in 115,000 cars and 19,500 are potentially still on the road.