The contact owned a 2017 Ford F-450. The contact stated that while driving approximately 5 MPH, there was a loud pop coming from the engine compartment, and the vehicle immediately caught fire. While attempting to turn off the vehicle, the vehicle failed to turn off. The contact exited the vehicle and called the Fire Department, and the fire was extinguished. A fire report was filed. The fire was caused by fuel leaking onto the engine. The vehicle was deemed totaled. The manufacturer was informed of the failure, and a case was opened. The failure mileage was approximately 90,000.