 "In July 2011, following the purchase of the ownership interests held by Canada and the US Treasury, Fiat’s stake in Chrysler increased to 53.5% and in September 2011, Marchionne was also elected Chairman of Chrysler.Fiat and Chrysler officially merged under Marchionne's leadership on August 1, 2014.Following the 2015 Volkswagen emissions scandal, in January 2017, the EPA also accused Fiat Chrysler of illegally installing software that allowed excess diesel emissions to go undetected.