I bought my car about 2 weeks ago with 11k miles on it. Over the two weeks I put 600 miles on it and everything was working great. A few days ago I noticed a rattling noise coming from the engine. The rattling noise is rather inconsistent, but generally happens when I let off the throttle. After the engine warms up it pretty much goes away.

Anyway, I took the car to the dealership today and I was told this was completely normal, as the transmission input shaft was notorious for making noises. I'm a little suspicious about how "normal" this sound actually this, so I'm going to take a test drive with a technician tomorrow. What I'm wondering though, is this really a normal sound that I shouldn't be worried about, or is the dealership lying to me?

Update: Took the car to the dealership today and got an oil change. The sound went away so I guess the car was just starved for oil. Doing an oil consumption test to make sure my car doesn't eat oil like some of the other g35's on this board.

 

no the input shaft doesnt cause it...the flywheel along with the throwout bearing is what causes it and its normal