Meriva B glass roof

I already have a 2012 Meriva B and although it's a bit slow it pretty much covers all of our needs and we've found it very reliable.

We need to get a second family car for similar mileage and requirements etc so thought the simple option would be to get another Meriva (don't laugh), this time the 1.4 turbo. The model I am looking at comes with a panoramic glass roof and a motorised retractable cover. Does anyone have any experience of this, is it reliable or prone to breaking? And does it make the car hotter?

Thanks!