Extreme temperature differences may cause the glass to crack. Here is a link from the Subaru XV Crosstrek forum reporting a shattered glass roof:
http://www.subaruxvforum.com/forum/p...d-sunroof.html
Apparently the dealership/warranty covered it.

 

Are all the mirrors on these cars heated?

I've got an 11 SE and didn't think they were.

However, the cases for the mirrors on my car are slightly warped. There is a slight dent in the top of the drivers. If they are heated I could understand why now. Clearly they are getting hot and deforming the plastic.

If they aren't...well then I'm back to wondering how it happened.


Thanks

 

Yes, they are heated and they are activated together with the rear window defroster.