The contact owns a 2016 Hyundai Sonata. The contact stated while driving at 55 MPH, other drivers started beeping the horn and shouting that the vehicle was on fire. The contact immediately veered to the side of the road. The contact then noticed flames under the front end of the vehicle, near the engine location. There was no warning light illuminated. The contact stated that the fire was extinguished independently. There was no injury sustained. The contact stated that the vehicle was towed to her son-in-law's repair shop, where it remained. There was no police report filed. An unknown dealer was notified of the failure and informed the contact that a repair fee would be charged for the engine replacement. The vehicle was not diagnosed nor repaired. The contact related the failure to an unknown recall. The manufacturer was notified of the failure and advised the contact to take the vehicle to the dealer to be diagnosed. The failure mileage was approximately 108,000.