Let's not beat about the bush here. The BMW X6 isn't for everyone. Fortunately for BMW, however, it's had enough about it to guarantee a steady stream of orders. Yes, many of us might wonder who these people are who walk past a perfectly good X5 in a dealership to plonk down an additional £2,000 for something with more challenging looks and less practicality, but then if everybody liked the same cars as us, we'd never manage to find any used bargains. Problem is, if you like X6s, you're not likely to find too many screaming used deals either as prices are pretty buoyant. Here's what to look for if you want to improve your chances of avoiding a dud.