Automaker's diesel scandal implicates Audi, Porsche

Volkswagen's diesel scandal is getting worse rather than better.

On Monday, November 2nd, Porsche and Audi got dragged into the mess.

The Environmental Protection Agency(EPA) and California regulators have released a new citation that says that 10,000 cars contained cheating software that reduced emissions only during testing.

According to the EPA, the use of “defeat devices” is not limited to VW’s 2.0-liter diesel engines, but might extend to the 3.0-liter diesel engines used in Audi and Porsche vehicles.

READ: Volkswagen orders recall of 2.4 million cars

Volkswagen responded by denying the claims.

"Volkswagen AG wishes to emphasize that no software has been installed in the 3.0-liter V6 diesel power units to alter emissions characteristics in a forbidden manner. Volkswagen will cooperate fully with the EPA to clarify this matter in its entirety.”

READ: Lamborghini affected by Volkswagen's diesel scandal

Porsche also responded by issuing a statement and promising to cooperate with the authorities.

"We are surprised to learn this information. Until this notice, all of our information was that the Porsche Cayenne Diesel is fully compliant."

Audi is yet to respond to this allegation.