The US Environmental Protection Agency and the California Air Resources Board approved the fix for 3-liter diesel engines in 2013-2016 models of the Volkswagen Touareg and Porsche Cayenne and the 2015 Audi Q7.
The vehicles have software that turns on emissions controls during testing but turns them off in everyday driving. German automaker Volkswagen AG will update the software in all of the vehicles and modify hardware in some of them. Owners also will receive compensation of up to USD 16,114.