The contact owns a 2017 Ford Escape. The contact stated while driving at an undisclosed speed, the vehicle stalled, with an engine misfire. The check engine warning light was illuminated. The vehicle was able to restart. The vehicle was taken to an independent mechanic where it was diagnosed with coolant intrusion into the engine, causing 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 made aware of the failure. The approximate failure mileage was 122,000.