Two problems related to engine knocking noise have been reported for the 2009 Mini Cooper S. The most recently reported issues are listed below.
Tl- the contact owns a 2009 Mini Cooper S. The contact stated that while driving at approximately 40 mph, the vehicle failed to accelerate when the accelerator petal was depressed and began to jerk. In addition, a loud knocking sound was heard from the hood of the vehicle when driven and oils leaks were discovered when parked. The failure occurred constantly. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 44,000. Jo.
Purchased used vehicle in June 2012. On todays date, upon cold start vehicle began making knocking noises as if lifters were involved. As car warmed up noise became less apparent, but prompted me to take to local mechanic. Mechanic advised that timing chain needs adjusting/replacing and needs to go to dealer (an hour travel). Upon perusing web info on vehicle and year, this issue appears to be a prevalent mafunction in this vehicle causing major engine failure.