I have just returned from a round trip to Munich c.2000 miles covered, average from the trip computer over the trip was only 33.6 MPG. Apart from the obvious occasional blast on the autobahn i cruised at 80mph all the way, i have only covered 4500 miles in total so far so hoping this will get better in time as i mainly do motorway driving so may take longer for the engine to properly free up?! I am getting no where near the stated figures and was hoping for high 30's on this trip. FYI on the whole journey i only saw 1 other A5 (Belgium).