The contact owns a 2017 Ford Fusion. The contact stated that his daughter had informed him that the coolant level was low. The contact refilled the coolant reservoir; however, the following day the coolant was low again, and the vehicle failed to start. The contact stated that the check engine warning light was illuminated. The contact changed the spark plugs, ignition coils, and fuel pump; however, the coolant level remained low. The vehicle was towed to the dealer who diagnosed the vehicle with coolant intrusion in the engine. The contact was informed that the engine block needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and opened a case. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was unknown.