Since having my 1st service at 17000 miles I have noticed that my average mpg for 17000 miles has now gone down from 48mpg to 41mpg as per DIS2 . My driving style has remained the same thoughout . Having spoken to another Audi owner they have stated that Audis are great until your first service during which they muck about with your Engine Management settings from new which results in poor mpg. Was wondering if anyone else has experienced this problem which I have been assured is common place.