Online car auctions allow buyers from all around the world to bid on cars. These take place through auction websites, such as EBay Motors, Yahoo! Auctions and other options. Winning these auctions means that you are bound by a legal contract to purchase the vehicle for the price you offered. That means you need to shop with care and avoid getting into a bidding war. Because of the nature of these auctions, prices are often higher than what you will find with other options.