The contact owns a 2024 BMW 330I. The contact stated that while attempting to reverse(R), the gear shifter was shifted into reverse; however, the vehicle unexpectedly accelerated forward and crashed into another vehicle. No warning lights were illuminated. There were no air bags deployed. No injuries were sustained. A Police report was not filed. The failure had occurred on several occasions. The vehicle was not taken to a dealer to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was unknown.