The contact owns a 2019 Jeep Wrangler. The contact stated that while driving at an undisclosed speed, the Check Engine warning light illuminated. The vehicle was taken to O'Reily's, where a portable diagnostic machine was used; however, no fault codes were retrieved. The contact stated that the check engine warning light was an old warning light. In addition, the contact was informed that the vehicle could be driven. The contact stated that while driving to the residence, the check engine warning light turned off. The failure reoccurred, and the engine seized. The contact stated that the vehicle rolled near the shoulder of the road. The contact became aware of smoke coming from the engine compartment. The contact stated that a good Samaritan stopped and assisted the contact. The contact and a good Samaritan became aware of fire coming from the engine compartment near the battery. The good Samaritan attempted to extinguish the fire with a sweatshirt, then used a jug of water from inside the vehicle. No injuries were sustained. The vehicle was towed to the local tow yard. The Carvana dealer where the vehicle was purchased was made aware of the failure. The vehicle was then towed to a repair shop assigned by Carvana. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 65,000.