The contact owns a 2025 Polestar Polestar 3. The contact stated that while driving approximately 3 MPH in a parking lot, as he depressed the brake pedal, to slow down the vehicle did not slow down. The contact stated no warning light illuminated. The contact stated that the vehicle jumped a curb and ran over some shrubbery. The contact stated that the passenger side front and rear doors had scraped a light pole, and then the vehicle rolled out of the parking lot and over a retaining wall. The contact stated that the vehicle landed on a sidewalk and then continued out onto a road below the parking lot and finally stopped. The contact stated that a warning had illuminated that his rear driver's side tire had deflated. The contact stated that the lower front bumper had been damaged, and some plastic parts of the driver's side wheel well had broken off. The contact had no personal injuries. The contact was able to drive the vehicle back to the parking lot and had the vehicle towed to a collision shop. The contact had not taken the vehicle to a dealer for any diagnostic tests. The vehicle had not yet been repaired. The manufacturer was not informed of the failure. The failure mileage was 745.