Buying a Car at Auction: Sold as Seen
You don't have the same protection when buying a car at auction as you do when buying goods from a trader.
Sold as seen vehicles are offered for sale with no guarantee or promise about mechanical condition or quality.
Cars at auction are sold as seen. It's up to you to do the checks before you buy.
The auctioneer will have guidelines, and you should check them before bidding for anything. If you paid an indemnity fee, check with the auctioneers if this covers your problem.
If the auctioneer knowingly misdescribed goods, you may be able to get some money back.
As with private sales, goods must still be 'as described', so keep any written description as evidence.