I've had mine since December last year (2nd owner) and I reset the long term average mpg once I took delivery.
My 9 mile A and B road commute, coupled with only using V Power means I average 30mpg. That has gone up by 2mpg since adding a Superchips map via Bluefin handset 3 weeks ago. Mine is DSG too.
At a steady 70 mph cruise it will easily settle in the mid-high 40's.