I usually get 525 miles to a tank these days, because I do a lot of short, quick, through-the-gears trips. On motorway drives I've had quite a few 700+ mile tankfuls.
I have 2006MY 2.0tdi sportback (bog standard) with 70k on the clock. DIS says whatever it wants between 42 and 60 mpg. !
Fill the tank brim full; zero the trip computer; when the light comes on to refill check the mileage you have done.
Re-fill to brim full and see how much it takes. work the mileage out from that.
My DIS says average 48 but I don't get more than 480 out of a tank which works out at an average 40 mpg.
Generally thats just pottering about on short journeys though.
Say what you mean scottie, don't hold back!Feck you must drive like a girls blouse LMFAO