I would walk away. Be glad they did not get in a wreck. That is a lot of milage to put on though, one heck of a joy ride.

And you paid too much I bet. 3k would get a total repaint around here for single stage. It would also include a full interior detail and cake in the trunk with a thank you note!

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car