Unless the car was supplied by MMC the contract is between customer and supplier of the product. There are many threads on this forum where the screens have been replaced under warranty by the supplying dealership if it was proven the fault lay in the installation of the screen or the screen itself. But to automatically assume the manufacturer should replace the windscreen is poppycock. I cannot think of one example where I have claimed for a new screen from the manufacturer of the car I own, so why would MMC have to prove to be different?
Not exactly correct. The manufacturer has ultimate responsibility for the 2 years MANUFACTURERS warranty. By not accepting liability, MMC is tossing the baby to the dealer.
If I am not mistaken, the customers contract is with the supplying dealer not the original manufacturer. The dealer has the contract with the manufacturer with respect to the product. I believe that in the case of a windscreen fail while at rest, the dealer should resolve the issue with the product and claim against the manufacturer. What I would suggest is that if the supplying dealers are not resolving the issue correctly the blame lies with them.