In a word 'Maybe!
Most police authorities sell off their lost, found, stolen, recovered goods through a legitimate auction house, through eBay or through Bumblebee in the UK. In the USA they also use the same methods to dispose of police auction stock.
Use a good free auction directory resource to find all the auction houses by category: Police Auctions.
Be very wary of any other organisation or persons claiming to sell off police auction stock or those selling lists of police auction auctioneers which are generally old, out of date and recirculated bad information.
A proper police auction will be advertised through the auction house and listed on legitimate portals.
For more information, see Sources and Related Links.
A police auction is where the police department auctions off confiscated (but legal) goods.
Often the items are stolen property, for which the rightful owner cannot be traced.
The police authority will contract an auction house to dispose of goods and these auctioneers can be found all over the UK and USA.
In the case of the USA the local police authority are allowed to keep the proceeds of sales resulting in some very rich police forces, ones that break major crime syndicates.
The proceeds of crime, ie any possession that cannot be legally accounted for will be confiscated from a convicted criminal and auctioned at a 'police auction'.
More information see links and resources
The police auctions that are run by the actual police department are legit, however the so-called police auctions run by private individuals are scams.
There are many ways in which one can find auctions for police cars. This includes checking for local ads in their paper as well as looking on car sites such as AutoTrader.
government auctions
Attending police auctions is a way to buy cars from the government or law enforcement.
Government auctions are usually held by police precincts. If you call your local precinct, they can tell you when and where they are holding auctions.
You can buy repossessed automobiles in the U.S. through many county auto auctions or police auto auctions. Check with your local courthouse or police department to find the next auction.
Motorbikes regularly come up at auctions across the entire country. There are at least 300 auction houses in the UK alone, the largest being Manhiem and British Car Auctions. Many of these will sell bikes entered by various police authorities. Note, individual police forces do not sell goods. All items are sent to contracted auction houses. You will need to find a directory which lists all auctions houses that deal with the police authorities For more information, see Sources and Related Links.
Police should not refuse top file a complaint form a citizen who has a legitimate gripe. There are watchdog groups that this behavior can be reported to.
In many areas, police and local governments will hold vehicle auctions. Thrift stores and local charities are also excellent sources for auto auctions, which are generally held regularly.
www.usa.gov has a comprehensive list of government auctions, though local government auctions are not included, only federal. You will have to talk to your local municipality or police station to find out about local government auctions.
Like all these auctions you are paying join fees and bid fees and such that will far exceed anything that you ever do get back.
Used police bikes can be found at police vehicle auctions. They are also available for purchase on Websites such as eBay Motors, or for sale on Craigslist.
Online car auctions can be found on sites such as eBay, Auto Trader and Copart Auctions. Many local and state governments also offer information on auctions of automobiles seized buy Police, Sheriff, DHS and other government agencies.