 The plug-in hybrid concept car was unveiled at the 2013 Geneva Motor Show.The basic powertrain hardware of the Audi A3 e-tron is shared by the Volkswagen Golf GTE plug-in hybrid, but the software controls of each car are different.In May 2013 Audi announced its decision to produce only a plug-in hybrid version, the Audi A3 Sportback e-tron.