1. AutoTrader

1. AutoTrader

2. eBay Motors

2. eBay Motors

3. Craigslist

3. Craigslist

4. Cars.com

4. Cars.com

5. Hemmings

5. Hemmings

6. CarGurus

6. CarGurus

7. Facebook Marketplace

7. Facebook Marketplace

8. TrueCar

8. TrueCar

9. Carvanaom

9. Carvanaom

10. Vroom

10. Vroom

11. CarMax

11. CarMax

12. Bring-A-Trailer

12. Bring-A-Trailer