The contact owns a 2018 Ford Fusion. The contact stated that while driving at various speeds, a warning light indicating that the engine was overheating was illuminated. The contact added coolant to the vehicle; however, the failure persisted. The contact stated that the vehicle was experiencing an excessive coolant consumption. The vehicle was taken to Advance Auto, where it was diagnosed with a misfire in cylinder #3. The vehicle was taken to the dealer and was diagnosed with coolant intrusion in cylinder #3. The dealer determined that the short block needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 91,000.