My wife purchased a used Peugeot 308 1.6 HDI (23,500 miles, 2014 registered) from a franchised dealer seven months ago. Last week she tried to use the air con for the first time and found it to blow warm air. We took the car back to the dealer, but they claim it is a wear and tear item.

I was also informed that the 308 has a new type of gas that is considerably more expensive and could only be done at a dealership that is many miles away. I am obviously unhappy with the service provided. Do you think the dealer should help with the costs?