The contact owns a 2017 Ford Escape. The contact stated that while the vehicle was parked, the vehicle started shaking. The check engine warning light became illuminated. The vehicle was taken to an independent mechanic who diagnosed the vehicle with a misfire in cylinder #3. The spark plugs and coil pack were replaced; however, the following day, there was no antifreeze in the coolant reservoir. The contact stated that there was no coolant in the oil. The contact checked cylinder #3 and found coolant leaking into cylinder #3. The contact contacted the dealer; however, the vehicle was not diagnosed. The dealer informed the contact that the engine needed to be replaced. The vehicle was not repaired after the most recent failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 78,940.