Cheating Software Also Affects VW's 3.0-Litre TDI Engine, Claims EPA

Volkswagen may be in even more trouble as the United States Environmental Protection Agency has alleged that the emissions cheating software has also been found in the the German carmaker's 3.0-litre TDI V6 diesel engine. Interestingly, this new claim also includes Audi and Porsche. The EPA's latest notification states that the 3.0-litre V6 engine was used by the aforementioned brands and affect cars with model years 2014 to 2016.

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Much like the software on VW's 2.0-litre TDI (EA189) engine that affects over 11 million cars, apparently the 3.0-litre TDI engine can also detect when the car is under test for emissions, and consequently operates in a low NOx (mono-nitrogen oxides) 'temperature conditioning' mode that allows the car to meet the standards.

Cynthia Giles, Assistant Administrator for the Office for EPA's Enforcement and Compliance Assurance, said, "VW has once again failed its obligation to comply with the law that protects clean air for all Americans. All companies should be playing by the same rules. EPA, with our state, and federal partners, will continue to investigate these serious matters, to secure the benefits of the Clean Air Act, ensure a level playing field for responsible businesses, and to ensure consumers get the environmental performance they expect."

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According to EPA, the following cars with the 3.0-litre TDI engine in the US are affected by the software:

- 2014 Volkswagen Touareg

- 2015 Porsche Cayenne

- 2016 Audi A6

- 2016 Audi A7

- 2016 Audi A8L

- 2016 Audi Q5