Rob G
I have been in the motor trade for 20 years, buying and selling at auction and from our family garage. If you take my advice you will not waste your time pursuing an auction house. Trading standards have given you incorrect advice, a cooling problem does not render a vehicle unroadworthy, unuseable perhaps, but not unroadworthy,tyres, lights, brakes, steering and suspension etc. do. Read the back of your receipt and also the terms and conditions displayed all around the auction, which you accept just by being on their premises and bidding for a car. The car sounds cheap enough and if the rest of the car is OK my best advice is to concentrate on the cooling problem. Unless the car was sold with a 1 hour mechanical warranty or with a BCA engineers report you are throwing your time and money away. You elected to buy at an auction to save yourself money, the same car would have been double the price at a reputable dealer and you would have had some comeback, the repair cost will still leave you quids in.Remember the golden rule, if something is cheap there is a reason for it. I am not trying to sound pompous but we sell 10 / 12 cars a week and we get it wrong as well, and guess where we send our problem cars? Guess where almost all garages send their problem cars? The previous owner of your Omega has probably traded it in to a dealer, and the dealer has sent it to auction. Sorry mate but I wish you the very best of luck. All the excellent help and advice in this forum should have your car running again shortly.