The contact owns a 2010 Toyota Prius. The contact stated while driving approximately 30 mph, while coming to a stop on wet pavement, the vehicle failed to stop and crashed into the vehicle ahead of him. The air bags failed to deploy. A police report was filed. There were no injuries sustained. The contact stated that whenever the roads were wet, excessive force on the brake pedal was needed to stop the vehicle. The vehicle was not taken to the dealer and was not diagnosed. The manufacturer was not made aware of the failure. The approximate failure mileage was 208,000.