The contact owns a 2023 Nissan Sentra. The contact stated that while the vehicle was parked in the driveway and shifted to park(P), the vehicle started to slowly roll backwards unexpectedly. While attempting to re-enter the vehicle to stop the vehicle, the contact was knocked to the floor by the driverâs side door. The contact sustained injuries to the knees, back, thighs, and a concussion. The contact received medical treatment and an appointment for an MRI was scheduled. The dealer was not notified of the failure. The manufacturer was not notified of the failure. The failure mileage was 75,300.