I recently took delivery of my 13 plate A5 Sportback Sline 2.0TDI 177, and I'm a bit confused on the MPG that Audi state for that model which is...
Extra Urban 69
When I took delivery of the car it was handed to me with a full tank, a week later the tank was under a 1/4 having just covered 250 miles of both town and open road driving so I put in another £50 of diesel which took it to bang on 3/4 . At the weekend I took the car for a long drive on the A9 and keeping an eye on my speed 60-70mph (average 51mph through the DIS)mostly in 6th I was getting a return according to the DIS of 34MPG. As you can see that is way off the mark set by Audi, ok I don't expect to get the 69MPG, but I don't expect to get 50% less.
My last car a 57 plate A4 SLine SE 2.0TDI 170 would return 45MPG on that journey.
I'm seriously thinking about contacting the dealership to have the ECU/fuel system checked over but was wondering if anyone else has came across the same thing before I do?