If you are thinking about buying a new car now the new 64 registration plates are here, you might first have to sell your old model. Of course, you could always trade in your vehicle with the dealer, whether you’re buying brand new or snapping up a second hand bargain. But you might want to try your luck with a private sale in the hope of bagging a better price. Faint heart never won fair price… Bear in mind that a private sale is not for the fainthearted. Be prepared to negotiate – and you might have to deal with some tricky customers. But here are MoneySuperMarket’s top 10 tips to help you get the best price for your old car.