My rs has it from standing, but yes your right the mustang edges it rolling especially 100 plus on the autobahn. The Mustang is limited to 155 where the RS will get to 150 then 165 eventually . The MPG when having fun is around the 12-14 mark, but for instance we went to Silverstone for a trackday he averaged 27 going down and back. On the track it was around 8