They probably do say "driving this car in a way that makes the engine scream invalidates the warranty" in some way or another. That's an easy one to detect. If

They probably do say "driving this car in a way that makes the engine scream invalidates the warranty" in some way or another. That's an easy one to detect. If I slammed up and down curbs all day long and the suspension went it'd be harder to detect, but no less not a warranty problem.