The contact owns a 2014 Mercedes-Benz Sprinter 2500. The contact stated while driving at 35-40 MPH, he saw smoke coming from underneath the hood of the vehicle. There were no warning lights illuminated. The contact stated as he veered to the side of the road, the vehicle inadvertently stalled. The vehicle was towed to the dealer who informed the contact that they were unable to diagnose the vehicle. Then the vehicle was towed to the independent mechanic who diagnosed that the engine needed to be replaced. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 200,000.