I have noticed a strange sound coming from the engine when changing gears when the engine is revving above 3000. I took it in today for them to check it but by the time I got there there was no noise. So I am going to take the car in on Monday and leave it there to see if anything is wrong with it. The engine seems to do that when the car is cold. I have the sport auto. This seems to happen when I do the gear change my self and the engine is revving above 3000. Has anyone experienced this before?