Would you buy a dirty used car?
I ended up walking away. Is this reasonable or stupid?
On the reasonable side, I know only a few people who keep their cars like that, and those are the type of people whose car I wouldn't want to buy. There were also a bunch of interior trim pieces that were slightly damaged, and fixing those would be annoying and expensive.
On the stupid side, if the dealer had detailed the car properly, I never would have known. Further, the car's maintenance records were fine and it wasn't that old. The person's kids abused the car, but a detail and a few broken trim pieces is far cheaper than fixing an engine. Moreover, I could have used the bad condition to try to negotiate harder.