The contact owns a 2013 Mercedes-Benz E350. The contact stated while driving at an undisclosed speed, the vehicle was smoking with the check engine warning light illuminated. The vehicle had been taken to the local dealer an hour before the failure and was diagnosed that the engine was consuming an excessive amount of oil. Additionally, the contact was informed that the alternator needed to be replaced. The vehicle was not repaired. The contact stated that the local dealer had concealed the condition of the vehicle. The manufacturer was not notified of the failure. The failure mileage was 141,499.