The contact owns a 2018 Ford Escape. The contact stated that while attempting to start the vehicle, the engine failed to turn over. The check warning light was illuminated. The vehicle was towed to a local dealer, where it was diagnosed with coolant intrusion into the engine which caused the #4 spark plug to be rusted, and a failure with the long block. Upon further investigation, the contact related the failure to an unknown NHTSA Campaign Number; however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 137,000.