The Volkswagen emissions-cheating scandal widened Monday (2 November) as US regulators said the German automaker also included illegal "defeat devices" on its larger 3.0 liter diesel engines over the past three years.But the Environmental Protection Agency said it had discovered in its investigation that various six-cylinder 3.0 liter diesel VW Touareg, Porsche Cayenne and Audis from the 2014-2016 model years and distributed in the United States had also been rigged with the software.