1. Yahoo! Autos

yahoo.com

2. Cars

cars.com

3. AutoTrader

autotrader.com

4. Jalopnik

jalopnik.com

5. KBB

kbb.com

6. Edmunds

edmunds.com

7. AutoBlog

autoblog.com

8. CarAndDriver

caranddriver.com

9. CarGurus

cargurus.com

10. CarMax

carmax.com