We bought a Nissan Almera Tino from a dealer for £695. We accept that this isn't a great amount of money, but we expected a decent runner. In the advert it was stated it had done 80,000 miles, but it was 86,500. When we went to look at the car my girlfriend asked if she could have a test drive but he said no because his trader's policy doesn't cover another driver.

We bought the car but it has developed lots of faults. The gears crunch when you change, the exhaust blows smoke and the engine uses oil on a weekly basis. I've spoke to the dealer and he says he isn't going to give us a refund or pay for any repairs. We have had the car less than a month. What should we do?