The contact owns a 2020 Subaru Forest. The contact stated that the brake failed. The contact stated that when the driver was reversing the vehicle out of the driveway, the vehicle abruptly accelerated and the driver engaged the brake pedal. However, the brake system failed to bring the vehicle to a stop. The vehicle proceeded and came to a stop when it crashed into a tree and damaged the vehicle taillight, the muffler, and a small window located at the rear passenger door area separated from the vehicle. There were no warning lights before during or after the failure occurred. The driver suffered injuries to the neck and shoulder the driver was taken to the hospital. The vehicle was not taken to the dealer to have a diagnostic performed. The vehicle was not repaired. A police report was not filed. The manufacturer was not contacted. The failure mileage was 12,000.