I have two daughters who have their own cars but unfortunately they didn't inherit my interest in things mechanical. When they have a problem with their cars, the message I tend to get is "It's making a noise".
On its own, a description like that isn't terribly helpful and taking a car to a garage with no more information than that is pretty much like giving them a blank cheque.
Are there any good on-line flow charts for mechanical novices that can help them do a bit of fault diagnosis? I've found this one
Tim