The Carfax came back guaranteed clean, but I knew that the front left fender had been off and put back on so the dealer agreed to allow me to return the X5 within 7 days for any reason (yes, I have it in writing).

Bought the vehicle up in the Seattle area and drove it down to Welcome to Collision Rebuilders, Inc. who we have used for years and years and are the best shop in PDX and they went over it thoroughly and pointed out all of the things that are wrong - where repairs have been made, where glass has been replaced and moldings have been off, and where there has been unibody damage that was *improperly* repaired. Car tracks straight as an arrow and runs great, but too many issues (and unibody damage) for us to keep it.

I don't think the dealer had any idea that the damage was there - he actually pointed out to me that the fender had been off, suggested I take the car to an alignment/frame shop instead of to BMW b/c they would be better at picking out any unibody damage, and gave me 7 days to return it for any reason.

So, we are back on the hunt. I realize it will be difficult to find another for the price w/ the mileage/features of this one, but hopefully one with a little better structural integrity.