TL* THE CONTACT OWNED A 2016 HONDA CIVIC. THE CONTACT STATED THAT THE VEHICLE WAS IN PARK WITH THE IGNITION OFF AND KEYS REMOVED, WHEN THE VEHICLE ROLLED BACKWARDS DOWN A HILL. THE CONTACT STATED THAT HE BELIEVED THE VEHICLE WAS IN PARKED AND THE PARKING BRAKE WAS ENGAGED. THE CONTACT STATED THE VEHICLE ENDED UP HITTING AND RUNNING OVER A TREE STUMP AND GUARDRAIL. THERE WERE NO INJURIES. NO POLICE REPORT WAS FILED. THE CONTACT HAD THE VEHICLE TOWED TO AN AUTO BODY SHOP WHERE THE UNDERNEATH OF THE VEHICLE WAS SEVERELY DAMAGED CAUSING THE VEHICLE TO BE TOTALED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT MENTIONED NHTSA CAMPAIGN NUMBER: 16V725000 (PARKING BRAKE) AS THE CAUSE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 47,173.