Yeh bit of a difference from the guy above my last post saying 30 and 50... obviously another one of these people who listen to rumours without any experience. Everyone i know with one of these cars gets similar to me. Mine is not remapped but i dont think you need it. Plenty quick enough the way they are. Might get it done at some point though to improve the economy if anything.
If you drive like a saint on the motorway you can get it to show 40mpg.