http://www.subaru.co.uk/Subaru_co_uk...ed?menuid=M0M3

from the site under 2.0D trim (both measured in UK mpg figures and liters per Km):

Combined 44.8 (6.3)
Extra urban 48.7 (5.8)
Fuel Tank Capacity (litres) 64
Urban 39.2 (7.2)
Correct me if I'm wrong but thats around 34 mpg US for combined.

for the 2.0D XC & XSn trim:

Manual
Combined 44.1 (6.4)
Extra urban 47.9 (5.9)
Fuel Tank Capacity (litres) 64
Urban 38.2 (7.4)
I think I've found the perfect car (for me!).