Cars.com - Visited by more than 11 million car shoppers each month, Cars.

classified-ads - Classified Ads is a web based free to use ad viewing and posting system that can be accessed from any part of the world to view the local ads of any area and location.

TrueCar - Buying a car can be painful.

Gumtree - Gumtree is the first site for free classifieds ads in the UK. Buy and sell items, cars, properties, and find or offer jobs in your area.

Autotrader - Find used cars for sale at AutoTrader.com. With over 3.

craigslist - craigslist provides local classifieds and forums for jobs, housing, for sale, services, local community, and events