The contact owns a 2015 Acura MDX. The contact stated while driving at an undisclosed speed, the vehicle lost motive power. The contact pulled over onto the shoulder of the roadway. The contact attempted to restart the vehicle; however, the vehicle failed to start. The vehicle was towed to the dealer; however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. In addition, the contact stated that the engine had been repaired by the dealer less than a month before the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 85,700.