Just picked up my first Audi and first diesel yesterday, 2006 2.0 TDI S line in black (of course)
Bought it from Leeds and drove up yesterday, A65 M6, M74, M73, M9, A9, A90 and hame.
Filled up the car in Leeds prior to leaving zero'd the odometer. Got home 336 miles on less than half a tank, absolutely fantastic economy compared to my petrol 1.8 20VT LCR.
Love the Audi, a total waft mobeel. The seats are well comfy and very easy to get just right (Black Leather sports seats with electric lumbar support) and the arm rest just makes it like a big comfy arm chair.
The suspension I'm very surprised with as well, I can see why lots of people think it's a bit too stiff but coming from a track prepared LCR with uprated ARB's, strutt braces, engine mounts and KWV3's it's positively compliant.
Looking forward to the MPG fascination of the diesel fraternity, I'm hooked already.