What is the 'sell to a dealer' option on Autotrader? Selling to a dealer allows you to list your car to over 5,000 car dealers. We work with our online partner, Dealer Auction.Learn more about Dealer Auction Related articles What is Dealer Auction? How much is it to sell to a dealer? What do I have to do to sell my car to a dealer? Why do you need my personal details when I'm selling to a dealer? Can I still drive my vehicle if I've sold it to a dealer?