i reguarly get 40+ if driving slower than my nan.
Giving it some 17-25, mixed obviously somewhere in the middle..
I have the 1.8t
I know the onboard computer only gives a rough estimate, but if i cruise on the motorway at 55mph in 5th i easily get 40 - 49mpg (on the display, not sure in the real world though)
And if i leave it in 5th at 30mph cruising gently it pulls fine and produces on the display anything up to 50 - 60mpg.
I find it great consumption if i dont hammer it, but at high speeds and heavy acceleration im getting between 7mpg -25
Hope this helps