My '07 Cooper S (Turbo) has a rattle / knocking sound from the clutch or gearbox (not 100% sure which) when the car is sat in neutral ticking over. When you depress the clutch the rattle / knocking sound stops. When you disengage the clutch and return to neutral the rattle / knocking starts again. The car has been back to BMW and they say that this is normal that the Mini Cooper S are supposed to make this sound (louder then a diesel). Can anyone help or has anyone had the same problem.