In June 2012 the carmaker confirmed production plans for a plug-in hybrid version of the A3. 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. The A3 Sportback e-tron has an 8.8 kWh battery pack that delivers an all-electric range of on the NEDC cycle, and a total of . The plug-in hybrid can reach a top speed of and can reach in 7.6 seconds. According to Audi the car has an average fuel efficiency of 1.25 L/100 km (188 mpg) and CO2 emissions of 35g/km.