The contact owns a 2015 Subaru Forester. The contact stated that while at a carwash moving forward, the vehicle accelerated up to approximately 35 MPH and crashed into the rear of a Ford Explorer. There were no warning lights illuminated. The driver sustained injuries to his chest due to striking the steering wheel. Medical attention was provided. The contact was able to drive away from the crash site. A police report was filed. There was no air bag deployment. The vehicle was taken to a Collision Center. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified about the failure. The approximate failure mileage was 70,000.