I bet you can't guess what I get. :)
the best i've had in this country is 25mpg but on a nice long trip across france last year I managed 33mpg on the toll roads, if you can set the cruise control to 75 mph and not slow down for 250 miles it does quite well.
That was also with 4 people in the car and that much !Removed! in the boot I couldn't see out of the back window, oh and 2 phones, a sat nav and a beer fridge running off the cig lighter socket. 1800 miles in a week and she never complained, wish I could say the same about the wife lol.