As far as what to watch for, well, oil change history. Recommended 10k miles is not frequent enough, in my opinion. At least every 5k is more sensible. If it has mods, you have to be a bit careful, people that add mods generally drive hard, but that varies a lot. If it has had regular oil changes, and wasn't totally whipped, these are pretty dang reliable cars. If you are talking to the previous owner, try to find out if they used top-tier gas, that's worthwhile. I don't really know of any common, systematic failure with these cars, if treated well. They do like to be driven with spirit, so to speak, but some do get thrashed.