In December 2011 my daughter's boyfriend bought a 2002 SEAT Leon 1.6 turbodiesel from an independent dealer. Within a couple of months, a problem was diagnosed with the turbo and this was repaired under warranty at the dealer's expense. Apparently some vanes were replaced. The turbo has now completely failed, the only cure being a replacement. My question is who is responsible for the cost of this repair? Should the failure of the turbo be considered as part of the original fault and, therefore, be the dealer's responsibility or will the dealer be able to claim that the original fault was repaired and the current problem is a result of something new, and, as the car is no longer under warranty, he is not liable?