The contact owns a 2019 Ford Fusion. The contact stated that while driving approximately 30-35 MPH, the ‘Engine Coolant Overtemperature’ message was displayed on the instrument panel. The accelerator was depressed and failed to respond as intended. The vehicle started losing motive power. The contact was able to coast to the side of the road. The contact inspected the vehicle and noticed that there was no coolant inside the reservoir. The contact added coolant to the vehicle. The vehicle was restarted, and the contact drove to the residence; however, the failure recurred, and the coolant reservoir was empty. The vehicle was taken to the dealer, and it was diagnosed and determined that the radiator had failed. The vehicle was repaired. The dealer diagnosed the vehicle again and confirmed coolant intrusion into the cylinders, causing engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The approximate failure mileage was approximately 38,500.