The contact owns a 2010 BMW 650I. The contact stated while driving 30 MPH, the vehicle went into LIMP Mode and then lost motive power, with the engine malfunction message displayed. The vehicle was towed to an independent mechanic, where it was diagnosed and determined that the VANOS system had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 128,000.