Ive had one for a year now, superb motors. What sort of age are you after as there is a few choice of engines, pre 2003, 2003-08 and 2008 onwards, newer the better really. No real problems to be honest, most common thing seems to be front brake calipers seizing.

Re-map is a must....

I get around 40 mpg.

You are more than welcome to have a blast in mine before you buy, im just the other side of Sutton Bridge.