I have a Sedan.
Sorry but they don't fold, the arm rest folds to get into the back. They did fold before, but I haven't really ever folded my seats for anything I think my bike once so I really don't care, if they fold or not. I'm not sure how it would look on a wagon because the back is one piece.
knock on wood I will probably need to put something in my truck that need the folding seats.