The contact owns a 2018 Ford EcoSport. The contact stated that the vehicle hesitated while starting. The contact stated that the check engine and START/STOP warning lights were illuminated. The vehicle was taken to a local dealer where the vehicle was diagnosed, and the contact was informed that there was coolant intrusion into the engine, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 50,800. The VIN was not available.