The contact owns a 2016 Hyundai Tucson. The contact stated that a week after purchasing the vehicle, the check engine warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The mechanic was unable to determine the cause of the failure. The mechanic informed the contact that the warning light would be reset. While performing a final test drive, the mechanic became aware of smoke coming from under the hood of the vehicle. The mechanic pulled over and attempted to open the hood but was unable to do so. The mechanic then noticed fire coming from underneath the vehicle. The fire department arrived and extinguished the fire. No one was injured. A police report was filed. The vehicle was towed to a tow yard by the police. The contact was made aware that the vehicle was included in NHTSA campaign number: 20V543000 (Service Brakes, Hydraulic) which was the cause of the fire. The vehicle was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 60,000.