Just got myself a 2.0 TDi A6 C6, ive had the big bus around a week, a change form the 350z i had previously, the car is spot on and everything works the one annoying element is that the MPG reading on the dash (both trip average and rolling) dissplay as three hyphens. i have had a bit of a search online and have come up with no clues to a reason or a possible fix.
Any ideas/clues would be great.