EPA Discovers Defeat Device in 3-Liter TDI, Porsche Cayenne, VW Touareg and Audi Sedans Affected

The US Environmental Protection Agency has issued a second notice of violation against Volkswagen and Audi today, one which also targets Porsche. Certain model year SUVs and large sedans are allegedly fitted with defeat devices on their 3.0 TDI diesel engines and emit up to nine times the EPA’s standard for NOx gases when this is not active. The EPA and the California Air Resources Board (CARB) have concluded that about 10,000 vehicl…