The engine malfunctioned and faulty rear seat belt, it is not available for inspection because it started a fire that destroyed by car. The remains of the car is at a savage yard. We were put at risk because we were driving/riding in the car at the time it starting burning. We were able to pull the car over and park it in a gas station parking lot before it became fully engulfed in flames. I am reaching out to Ford. Since it was not an accident involved, the fire department inspected the vehicle and determine the fire started in the engine. Insurance representative has determined it is a total loss. There were no warning lamps or messages from the car. However, what caused us to detect something was wrong was the thick smoke started filling the car's cabin at which time we immediately pulled over. When we stopped the car, actual flames came from under the hoods towards the windshield of the car and we proceed to exit the car. My granddaughter in the back seat was having a hard time releasing herself from her seat belt.