When I am buying a car I am not just interested in the price on the screen, but how much am I going to have to spend on it in the next 6-12 months. Things that I am interested in are: How much tread on the tyres, how much wear on the brake pads and discs, what are rear wishbone bushes (lollipops) like as they can start going at 50k, do the rear springs look like they have been changed because these can go at 50k, I don't know too much about the N52 engine but from memory water pumps can be an issue around 50k and are expensive to fix. If you can do a lot yourself, it may not be a big deal just material costs, but if you rely on a garage, it could get expensive.