I purchased a used 2013 Renault Twingo from a Ford main dealer many miles away. It was purchased over the phone and came with a three month warranty including mechanical, electrical and multimedia.

The Renauilt had an oil leak, evident after a month, which I've just had fixed by a local independent Renauilt specialist. The supplying retailer now wishes me to deal directly with their warranty firm to discuss reclaiming the cost. Should I do this or should I insist on dealing with the retailer directly?.