The contact rented a 2018 Buick Cascada. The contact stated while driving at 5 MPH and making a right turn, the brake pedal was depressed but failed to respond, which caused another vehicle going at an undisclosed speed to crash into the front driver side of the vehicle. There were no warning lights illuminated. The air bags failed to deploy. The contact was knocked unconscious and was able to exit the vehicle with the assistance of emergency services. The contact went to the hospital the next day and was informed she had sustained a broken sternum. A police report was filed. The vehicle was towed to an undisclosed location. The dealer was made aware of the failure and advised to tow the vehicle to their location so they could diagnose it. The manufacturer was made aware of the failure and did not provide assistance. The VIN and failure mileage was unavailable.