One problem related to engine noise has been reported for the 2011 BMW X3. The most recently reported issues are listed below.
The contact owns a 2011 BMW X3. While driving at unknown speeds, the accelerator pedal was applied and the vehicle stalled without warning. Additionally, when the temperature gauge increased, there was an abnormal squealing noise. The vehicle was taken to an independent mechanic. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified and referred the contact to NHTSA. The VIN was unknown. The failure mileage was approximately 109,000.