The chief executive of Volkswagen, Martin Winterkorn, has quit the car firm, insisting he was not involved in the emissions tests scandal that has rocked the automotive industry and could lead to one of the biggest ever legal claims. The resignation of Winterkorn follows five days of growing pressure on VW after the US Environmental Protection Agency (EPA) accused the carmaker of using a defeat device to cheat emissions tests on diesel cars. It is thought the scandal could have serious knock-on effects for other European car manufacturers.
