When you buy a used car and it turns out to be faulty, your legal rights will depend on who you bought the car from and how the car was described. If you bought the car from a registered dealer you will have consumer protection under the Consumer Rights Act. The Act states that the car must be of satisfactory quality, fit for purpose and be as described in any marketing or promotional materials. If the car fails to meet any of these standards, you will have a right to reject the car within 30 days of purchasing it and claim a refund. For further information, read Returning a used car.