The AutoTrader is a weekly publication in which you can find pre-owned vehicles, from private sellers or used car dealerships. Certified Pre-Owned by Mercedes-Benz also use the AutoTrader to advertise their vehicles. Buying from a used car dealer has its risks, no knowledge of the car's history, and there are no guarantees. So we created a fictitious used car dealership and illustrated our key differentiator, if it’s not Certified Pre-Owned by Mercedes-Benz, who knows what you’re getting?