30 days to 6 months
If a defect is found once the 30 days have passed, but within six months, you are entitled to request a repair, replacement or refund free of charge. The law assumes that the fault was there at the time of delivery, unless the seller can prove otherwise. Where this right is exercised, dealers only have one chance at repair or replacement. If they fail to repair or replace the car, you are entitled to a full or partial refund.
6 months or more
After the first six months, the burden is on you to prove that the car was faulty at the time of delivery. In practice, this may require a form of expert report, opinion or evidence of similar problems across the product range. If the attempt at a repair or replacement is unsuccessful, you’re entitled to a refund.