The contact owned a 2012 Kia Optima. The contact stated while driving approximately 50-60 MPH with someone in the front passenger seat, she noticed smoke, and then fire coming from underneath the hood. There was no warning light illuminated. The contact immediately veered to the side of the road. Both the contact and her passenger exited the vehicle. The contact stated that the fire extended significantly and the vehicle burned from the front end to the rear seats. The fire department extinguished the fire. The contact could not confirm whether a fire department report and a police report were filed. There were no injuries sustained. The vehicle was towed to a tow lot, where it was totaled. The contact later received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) that she related to the failure. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 130,000.