While the specific requirements of car auctions can vary based on the auction itself, most generally involve registering to participate and placing bids on cars during the designated time. The individual with the highest bid then purchases the car for that price and makes arrangements to transport it.
Most auctions require participants to register ahead of time so the organizers can gain an idea of how many bidders will attend the event. Preregistering also allows the bidder to verify financial information with the auction and speed up the purchasing process in the event of a successful bid. Some auctions only require participants to provide a name to register, while others ask for information such as an email address or financial verification.
Bidders should always examine the auction catalog before the auction begins to gain an understanding of the types of cars being sold. This allows the bidder to save time at the auction and use it instead to examine the car in person as much as possible. Most auction don't allow bidders to drive the cars prior to the auction, so they should ask as many questions as possible and inspect all details of the car to see if it is worth purchasing.