I find it quite amusing really, and I enjoy putting these things right, but I list some of the niggles that I find with the cars that I buy:-

1) Driver's door windowswitch not working correctly
2) Driver's door checkstrap broken
3) Bonnet release cable issues
4) Rattling tailgate
5) Tailgate struts won't hold the tailgate up
6) Door open lights stay on even when the doors are shut

Please add to the list if I've missed anything................