The contact owns a 2020 Jeep Grand Cherokee. The contact stated that while starting the vehicle, the vehicle vibrated abnormally, and the contact noticed white smoke coming from the exhaust. There was no warning light illuminated. The vehicle was towed to an independent mechanic where it was diagnosed that there was coolant intrusion leaking into the engine, which caused engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 77,000.