The contact owned a 2013 Kia Optima. The contact stated while his brother was attempting to accelerate from a complete stop, the accelerator pedal was depressed but the vehicle failed to respond. There was no warning light illuminated. The contact's brother then saw flames underneath the hood of the vehicle. The contact's brother immediately exited the vehicle. The contact stated that the fire expanded significantly. The contact's brother was able to extinguish the fire with the assistance of the fire department. A fire department report was filed. There were no injuries sustained. A police report was filed. The vehicle was towed to a tow lot, where it was totaled. The dealer was notified of the failure. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 180,000.