The contact owns a 2017 Ford Fusion. The contact stated while driving at an undisclosed speed, the power train fault message was displayed, and check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who determined that there was coolant intrusion into the cylinders, causing engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to the Customer Satisfaction Program: 21N12. The manufacturer was notified of the failure, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 55,352.