One more thought. You do pay indirectly for the warranty repairs too. When you buy a new car, the price includes a 'notional amount' for warranty repairs that PAG builds into the price. They base this on the average cost of warranty work done on their cars. Some cars will require more and some will require less warranty work to be done.

I'm sure PAG are smart enough to hedge this warranty liability exposure in some way too - e.g. by getting liability insurance in the insurance market for the warranty work they pay for.