Don't forget the 2.0 and 2.2 mk4 have DPF's whereas the 1.8 doesn't. I quite like my 1.8tdci, it certainly isn't fast but plenty good enough for the daily commute, with the 1.8 you can blank the egr off if you wish which gives it slighty better economy, according to the gauge mine does 50.5mpg all day long, 55mpg average is pretty easy too if you try!