The contact owns a 2022 Tesla Model Y. The contact stated while his wife was driving 40-50 MPH in the evening with Self-Driving mode activated, the vehicle failed to decelerate while driving onto the exit lane and crashed into the rear of another vehicle. The contact was occupying the front passenger's seat during the incident. The front driver's side and passenger's side air bags deployed. There was no reported injury. The vehicle was towed to the residence. The vehicle was later towed to a Tesla autobody repair shop to be repaired. The vehicle was then towed to the autobody repair shop recommended by the insurance company. The vehicle was later totaled by the insurance company due to the cost of the air bags replacement. A police report was filed. The manufacturer was notified of the failure. The failure mileage was approximately 30,000.