The contact owns a 2018 Ford Escape. The contact stated that while driving 30 MPH, there was an abnormal sound coming from the engine. The vehicle jerked, and the contact depressed the accelerator pedal; however, the vehicle failed to accelerate as needed, and the vehicle stalled. The contact coasted to an oil change business nearby. The contact was unsure if any warning lights were illuminated. The vehicle was diagnosed by an independent mechanic with transmission failure. The vehicle was not repaired. The vehicle was towed to a dealer, and the transmission failure diagnostic result was confirmed. The vehicle was not yet repaired. The contact stated that the vehicle had been taken to the dealer a year prior to the failure, and the transmission was replaced. The contact was later informed by Car Shield that, per the pictures submitted, there was engine damage seen. The pictures indicated coolant intrusion into the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been taken to a dealer for a routine oil change, and the contact was informed that the check engine warning light was illuminated; however, the dealer found no failure with the vehicle. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was approximately 248,000.