The contact owns a 2018 Ford Focus. The contact stated while driving at an undisclosed speed, the temperature gauge indicated that the engine was overheating, and there was white smoke coming from the exhaust, prompting the contact to discontinue driving the vehicle. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who determined that there was coolant intrusion into the cylinders, causing damage to the engine. 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 Customer Satisfaction Program: 21N12. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 141,000.