Interstate auto auction is quite popular with auto mobile dealers, wholesale suppliers, fleet operators, etc. These auctions are for both used and new vehicles. Sometimes, auto mobile dealers would want to dispose their old inventories, quickly and completely. They do not mind a dip in their profits as long as their inventories and warehouses are cleared of the old stock to make way for newer vehicles. This ensures a much lower price of the vehicles that potential buyers can benefit from. Other dealers and whole sale buyers can increase their inventory stocks with lower priced but unused vehicles and can increase their profits by the retail sales of these vehicles. Interstate auto auction also makes it possible for buyers of different states to avail these benefits.

Most of the fleet operators make their vehicle purchases through the interstate auto auction, not only to ensure that they get lower prices but also to increase their fleet size in each state/location that they operate in. The whole sale and dealer interstate auto auction is not open to general public who want to make individual purchases of one or two vehicles. The auction is for a bulk set of vehicles that have to be purchased on the whole. Since many vehicles are bundled into a single package, inspection of all the vehicles might not be possible for the buyers. The interstate auto auction officials have their set of seller regulations and guidelines that protect the buyers from inferior quality vehicles and malpractices by sellers.

Public interstate auto auction is also conducted on a regular basis and individual buyers can purchase cars and other vehicles after inspecting them in person. Generally, the public auctions are done for used cars that are obtained from various sources; donations, seized vehicles, etc. New vehicle sales that are open for public are very rare. People who are interested in purchasing used vehicles can benefit a great deal by making their purchases through these auctions. The condition and quality of the vehicles are generally good and the cost price is also very less when compared to other modes of purchase. Interstate auto auction is usually conducted by the designated government agencies but private auctions by wholesalers and dealers are also conducted. People who want to participate in such auctions will have to understand the regulations before bidding on the auctioned vehicles.