The contact owns a 2018 Ford Escape. The contact stated while starting the vehicle, there was an engine misfire, and the vehicle was idling rough. The contact stated that the check engine warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the water pump needed to be replaced. The vehicle was repaired. The contact stated that the failure reoccurred. The vehicle was taken back to the same dealer where it was diagnosed and determined that the ignition coils and spark plugs needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The contact returned the vehicle to the same dealer and was advised that there was coolant intrusion into the engine and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and the contact was referred to the NHTSA Hotline. The failure mileage was approximately 123,000.