If you have a ticking, slapping, knocking, squeaking noise the answer from the dealer is, "that's normal". If the car is out of warranty the classification of the noise changes to "that's $1,500", followed by the phone call that changes the noise to, "that's $2,000", sometimes followed by the follow up call, "that's $5,000". You have to have some sympathy for the service writer. A new car is a lot more complicated than a vacuum cleaner. A vacuum cleaner does not have a hood release or any of those other complicated things like a battery or a spare tire.