The contact owns a 2018 Ford Escape. The contact stated while driving 10 MPH in a parking lot, the check engine warning light illuminated. The vehicle was taken to an independent mechanic who replaced the spark plugs and coil packs. The vehicle was taken to the local dealer where a heat test and bore were performed and confirmed there was a coolant intrusion in cylinder #3. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 142,621.