One of the largest car sites for North America. It contains the largest collection of new and used cars for sale around the United States. Browse by brand name or by type to find the best deal. Forget about those car dealerships and cut out the middleman. Or if you have a car for sale, why not post your vehicle on their site? Furthermore, this site isn't just about the sale, it is about helping the car buyer (and seller). There are links to reviews, general buying tips which is actually very useful for first timers, maintenance cost calculators and so on. Oh, you can also join their forums to discuss with other car enthusiasts.

Edmunds

In the United Kingdom, they are one of the largest supplier and retailer of car parts and accessories like entertainment and GPS navigation systems. Yes, just when you thought the Brits have not learned to drive or even knew that cars existed, they shock you by having such businesses pop up. I guess it is a myth then. And since the Brits love bicycles, Halford sells that too. I don't know why the Brits love bicycles so much. You have to paddle for the bicycle to move and going uphill is a torture. Yet, in England, everywhere you go, you will see bicycles. Even a huge part of Halfords' business comes from the sale of bicycles and bicycle accessories. Anyway, if you are into repairing your own car or if you are a small workshop, you might want to take a look at what they have in stock. They have over 462 stores in the United Kingdom, which in my opinion is quite a lot. They are also expanding into Eastern Europe where the people there are more used to servicing and repairing their own cars.

Halfords