We bought a 2013 Audi A4 from a dealer in July. The car was intended to be used by my daughter and family for the duration of her home visit from Australia (3 months) and for me to sell it when she flew back. The car appeared fine, when it was purchased, it came with a ‘ticked’ checklist and 3 month warranty. For the past month it’s been advertised for sale and sat on our drive. But after taking it for a car wash prior to a possible sale, I noticed the heating wasn’t working. As heating wasn’t required during the summer, I suspect this fault was present (undetected) at the point of sale. Unfortunately the warranty expired 5 days before the fault was noticed and the warranty company have rejected any claim. I’ve spoken with the garage that sold the car and they’ve also said they don’t accept any responsibility, as there was a checklist completed, showing the car was fine when sold. But I doubt they checked the heating in June/July. What options are open to me please.