The contact owns a 2013 Kia Optima. The contact stated that while a friend was attempting to start the vehicle, the vehicle failed to start. There was no warning light illuminated. The vehicle was towed to a local dealer, where the vehicle was diagnosed, and the contact was informed that the engine had failed and needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 23V652000 (SERVICE BRAKES, HYDRAULIC); as the probable cause for the failure. The manufacturer was notified of the failure. The approximate failure mileage was 67,999.