i've just purchased a 2005 stow and go 112k, with no tow ball and regular servicing, was bought from a good friends parents so pretty sure i wasn't sold a bad car, i have noticed a slight ringing noise that only happens occasionally, it sounds like something scraping along the exhaust pipe but it sounds like its coming from the engine compartment. looking forward to our first proper outing. i asked about the cam belt and they said it has a chain, from the posts above i am starting to think this is not the case and is something i should be looking into checking.