Well here in the UK, I found quite alot of Crossfires I went to view, suffered considerable wheel arch rust. Due to the climate (plus winter salt spreading) we have here.
There are some other rust prone areas around the car you can read about on the Forum. But certainly worth considering plus looking out for.

There are also some 'characteristic' mechanical problems, detailed around the forum and in the Guides, that can be fairly easily rectified if you have some compentency working on cars. Or even replace these items as preventative maintenance... RCM, a couple of engine sensors, etc - each of which can result in the engine not running / starting.