The contact owns a 2016 Jeep Wrangler. The contact stated that upon replacing the engine oil himself, he noticed that oil was leaking onto the transmission. The contact stated that there was no smell of oil burning or any smoke coming from the oil leak. There were no warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed that the oil filter housing was cracked. The dealer replaced the oil filter housing and repaired the vehicle; however, while the mechanic was test driving the vehicle, the vehicle caught on fire under the hood. There were no injuries sustained. The fire was extinguished with the assistance of the fire department. A fire department report was filed. There was no police report. The manufacturer was notified of the failure and sent an inspector who diagnosed that the fire started under the hood. The contact stated that he believed the fire started out as an electrical fire. The manufacturer advised the contact that the vehicle could not be repaired under warranty; and that the repair would be at his own expense. The vehicle was not repaired. The failure mileage was approximately 65,700.