see my blog , I have tried to post all the MPG for each tank I use.
27 MPG average mixed commute+thrash occasionally
over 30 MPG on a long continuous run.
The speed at which you cruise makes a HUGE diff on the GTI , @60 its painful but great mpg.
Fuel type can help , so can making sure your tyre pressures are correct , plus I seem to remember a bod on here had terrible mpg when running a heavy sub ! turn off the 'goodies' and chuck the toolbox out the boot.
All small differences but cumulative can add up to lots.
but in reality Id say just get in and enjoy it, you wont be able to resist once you drive it
