The contact owns a 2015 Ford Fusion Energi. The contact stated that while driving at 55 MPH, the driver slammed on the brake pedal, the vehicle veered towards the left, and crashed into the guardrail. The vehicle was uncontrollable. There were no warning lights illuminated. There were no reported injuries, fire, police report or air bag deployment. The contact was able to continue to driving. The contact called the local dealer, but the vehicle was not diagnosed or repaired. .The manufacturer was not contacted. The failure mileage was approximately 167,000.