I'm going to get a new car soon but I think Im gonna have trouble selling my old one. It's an M reg Vauxhall Cavalier. Engines fine but the rest is kind of falling apart! Theres only a few spots of rust on the outside but bits keep falling off on the inside! Also the bonnet catch has issues and doesn't like to open and when it finally does, it doesn't like to click back into place! Would I be better of buying through a garage and trading it in even though I'll probably be paying more for my new car or going private and just try and sell it?

Any ideas would be much appreciated

Ta