Anything that has low quality dirt-trap carpeting (low end Toyota, Subaru, all VW, some Ford, some Mazda). I also hate doing Ford/Lincoln Expedition/Navigator and the even worse "EL". You can clean these all days and they still look like cr@p. Plastic is everywhere, inside and out! 1/3 of the exterior is faded plastic which absorbs anything you put on it! The carpets are terrible, there are nooks everywhere and they are always trashed by kids/dogs.