We subscribe to Consumer Reports. Late last year they had an article that raised alarm over the growing use of panoramic sunroofs on cars, and the under-reported occurrences in which they suddenly fracture into fragments of safety glass while the car is being driven.
Here's a link: https://www.consumer...anger-overhead/
My C-Max Energi is from 2016, and has the panoramic glass roof. I found this article to be moderately alarming. It describes several incidents in which people were traveling in their cars, and suddenly had a loud noise followed by a shower of glass raining down into the car.
On the bright side, the C-Max was not mentioned in this article. However, Ford was listed as having more complaints than other manufacturers. The article also said that car manufacturers are under no obligation to share information regarding the sudden fragmentation of glass roofs, and will typically declare that these were incidents of rock penetration. It's very difficult to prove whether a thrown pebble might have impacted the edge of a glass roof, after it has shattered into the small pellets that safety glass tends to become when fractured.
I initially enjoyed having the panoramic roof, but since reading about this problem I have taken to keeping the interior cover deployed unless I'm making a local trip that avoids highways. The cover is single ply cloth, and seems unlikely to provide much protection.
Does anyone know whether significant occurrences of fractured glass roofs have occurred with the C-Max? I searched these forums and found only a few incidents. These were just cracks.
Another point mentioned in the article was that Ford has begun using multi-layered glass on some models, which is much safer since it does not "explode" into fragments when over-stressed. It would be a significant relief if it turns out that our C-Max has this glass.