Check with a solicitor or your local council for laws regarding this, but my thoughts are thus: Did you sign a contract with the original price on it? If so, then the dealer CANNOT change the price - that contract is a legally binding document and if they breach that, they are criminally liable. If they change the price then you have the right to refuse the car and should be able to cancel the contract. Check the fine print of any paperwork you've signed to see if it says that price can be changed. Finally, if there was only a verbal agreement, then there is no real legal binding for you to take the car. If it was a verbal agreement then you could back out by citing that the dealer altered the agreement without your consent. The only difficulty you would have would be getting back the deposit. No matter which way you go, be tough. Do not let the salesperson take control. If you had an agreement and the dealer changed it, then you are not obliged to take the car. Depending on the circumstance, you may be able to demand the original price if you still want the car, however if that is the way they do business, I'd get as far away from them as possible. It might be worth reporting them to your local consumer affairs department.