According to German newspaper, Der Spiegel, Volkswagen Chief Executive, Herbert Diess, was told about the existence of cheating software in their cars two months before regulators blew the whistle on a multi-billion exhaust emissions scandal, but he did nothing to stop it because it was all his plan. The said scandal reportedly cost VW more than $27 billion in penalties and fines.
VW’s cheating was exposed by the U.S. Environmental Protection Agency (EPA) who found unusually high pollution levels in VW’s vehicles on Sept. 18, 2015. Volkswagen’s senior management is still being investigated by prosecutors in Braunschwei, to see whether the company violated disclosure rules. U.S. regulators threatened to ban VW cars because of excessive pollution levels, hence VW decided to apply the cheating method by installing defeat devices in its cars.