The contact owns a 2018 Ford Edge. The contact stated while starting the vehicle, the vehicle was idling roughly. The contact stated that once the engine had warmed up, the vehicle ran smoothly; however, while the accelerator pedal was depressed, the vehicle hesitated. The contact stated that the vehicle was lunging forward while the accelerator pedal was depressed. The contact had taken the vehicle to an independent mechanic who diagnosed the vehicle and determined that there was coolant intrusion into the engine block and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline to file a complaint. The failure mileage was approximately 72,000.