Can a car seller increase the price after I've paid a deposit?

I recently visited a Volkswagen garage and put a deposit down on a secondhand Scirocco. We signed a contract of which I have a copy. I will collect the car in two weeks. Two days later (today) I had a call saying there had been a mistake with the price and it was now £800 more. I know I'm getting a good deal, even at higher amount, but should I stand my ground to get agreed original price or pay new price? I don't want to lose the car. I travelled 100 miles and have spent months researching cars and good prices. What should I do?

Asked on 16 March 2013 by SF, via email

Answered by Honest John
You are legally entitled to enforce the contract. It is signed. You have a copy. And 'consideration' in the form of the deposit has been paid. It is legally binding on both you and the garage.
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