The complaint has been filed against all the Volkswagen brands including Audi and Porsche. (File Photo)
The US has sued Volkswagen alleging that nearly 600,000 diesel vehicles, including all its brands, had illegal defeat devices installed resulting in excess harmful emissions and the German automobile giant faces penalties well above USD 20 billion.
In a the lawsuit filed yesterday, the Department of Justice alleged that Volkswagen violated the Clean Air Act by selling, introducing into commerce, or importing into the US motor vehicles that are designed differently from what Volkswagen had stated in applications for certification to EPA and the California Air Resources Board (CARB).
The complaint alleges that nearly 600,000 diesel engine vehicles had illegal defeat devices installed that impair their emission control systems and cause emissions to exceed EPA's standards, resulting in harmful air pollution.
"Car manufacturers that fail to properly certify their cars and that defeat emission control systems, breach the public trust, endanger public health and disadvantage competitors," said Assistant Attorney General John C Cruden for the Justice Department's Environment and Natural Resources Division.
The complaint has been filed against all the Volkswagen brands including Audi and Porsche.
The Justice Department has not specified the overall penalty it was seeking. However, it laid out per-car penalties of up to USD 37,500, and up to USD 2,750 per defeat device, which could take the fines for the automobile giant to well past USD 20 billion.
Filing a complaint on behalf of EPA, the Department of Justice alleged that Volkswagen equipped certain 2.0 liter vehicles with software that detects when the car is being tested for compliance with EPA emissions standards and turns on full emissions controls only during that testing process.
During normal driving situations, the effectiveness of the emissions control devices is greatly reduced.
This results in cars that meet emissions standards in the laboratory and at the test site but during normal on-road driving emit oxides of nitrogen (NOx) at levels up to 40 times the EPA compliance level.
In total, the complaint covers approximately 499,000 2.0 litre diesel vehicles sold in the United States since the 2009 model year, the Justice Department said.
EPA further alleges that Volkswagen also equipped certain 3.0 litre vehicles with software that senses when the vehicle is undergoing federal emissions testing. The complaint covers approximately 85,000 3.0 litre diesel vehicles sold in the US since the 2009 model year, it said.
When the vehicle senses the test procedure, it operates in a "temperature conditioning" mode and meets emissions standards.