A survey by the Ministry of Environment revealed that the device was operated to increase emissions of fine dust-causing substances from Audi and Volkswagen.

There were eight models, including the Audi A6 and A7, Volkswagen Touareg, and Porsche Cayenne.

The Ministry of Environment will revoke the 8 types of cars detected and impose a fine of 7.9 billion won on Audi and 4 billion won on Porsche.