Buying a car at an auction offers the opportunity of getting a really good deal, as long as you don't mind taking a bit of risk. Typically, cars sold at auction have no warranty or guarantee attached to them, meaning that if you make a mistake and buy a piece of junk, it's your piece of junk to deal with. Auction Bidding Different car auctions have rules that may vary to some extent, but they all work more or less the same. Cars are either...