Be wary of the easy option of claiming on your insurance. It isn't necessarily "just like a windscreen" and it may not be covered under "glass" on your insurance - if it's a panoramic roof it's quite possible that it's excluded from the normal "no fault" glass replacement part of your policy - some insurers specifically exclude panoramic sun roofs from that part of their cover. [EDIT: what I mean by this is most policies will repair or replace your windscreen or windows without you paying the excess]. Check your policy.
If you can't get it done for free (like a windscreen) under your insurance, you'd have to weigh up the cost of replacing it yourself and compare that to the amount of excess you'd end up paying. Replacing panoramics can be expensive so it might be worth it.
But my first avenue would be to take it up again with the Mercedes dealer you bought it new from, and argue it out with them. My understanding is that panoramic roofs do fail. They are meant to be part of the structural integrity of the car and have to withstand a lot of flexing. If there's a fault it may manifest itself as a hairline crack which gets bigger over time. Have you noticed anything like a crack in the glass? I suspect Mercedes will argue that the fact the roof "shattered" spontaneously is more likely to indicate stone/chip damage than it is to indicate an inherent fault. I suppose it's too late to ask an independent assessor to look at it.
I'd want the dealer to sort it out for me, but if they don't want to play along I'm not sure how, after 12 months, you'd establish the roof was faulty. (Although it's one of the reasons I would be uncomfortable having a car with a glass roof.
The fact someone won a case in California means nothing. You can win anything in California.
I have contacted the court and they tell me they are happy to change defendant name and re-serve papers to new address in Dublin but this would obviously reset the return date at 6 weeks. I will think this over.
In the meantime I have opened up correspondence with this firm of solicitors as, from their language, I am "slightly" hopeful that they may settle.
It's probably covered under 'Glass' in your car insurance policy. Probably £75 excess to pay and it probably won't affect your NCB.
It's just like a windscreen.
Trying to argue a defect will be nigh on impossible, just get it replaced, by National Windscreens if possible, not Autoglass.
No point in going out to look for a fight, especially in these difficult times.
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