Just your general stuff, make sure drives fine n pulls straight etc.
Id check tyres, brakes and even if cambelt has been done. All tools to haggle down the price with.
Do like the blue though.
Mpg isnt too bad, down to driving style. To and from work when kids were off school i seen high 30's average. Now i get low 30's as more traffic.
For a 2.0l turbo they are pretty good to be fair if driven eco. Obviously you put your foot down and the mpg shoots down but even mixed driving you should get mid to high 20's unless you cain it round everywhere.
good luck with the buy and welcome