The contact owns a 2024 Buick Envision. The contact stated that while driving 15-20 MPH, the brake pedal was depressed and the brakes failed to respond as needed, causing the vehicle to crash into a residence. The contact shifted into reverse(R), and the vehicle crashed into a porta-potty at a construction site. The vehicle shifted into park and stopped. The contact stated that the Driver Assist feature was operational during the failure. The contact sustained bruising and soreness to the right side of the body. The vehicle was drivable after the failure. The approximate failure mileage was 22,000.