Hey, I have a 2015 A4 Avant FWD 2.0TDI 177hp on 225/55 R16" summer tires with a manual with around 75K miles o it and with regular diesel I'm getting around 67MPG on a run and around 50 in the city, calculated from the pump, I also have a 2011 A3 1.6TDI 90hp FWD and it gets 72-75 any day (on a...