The panoramic sunroofs in 2015-2016 Sonata Hybrids are detaching and taking flight. No, that is not a feature.
“It was finally determined the sunroof can bind if the windscreen is out of position or if it’s loose, and forcing the sunroof to close can cause the sunroof glass to detach from the Sonata.”
The recall won’t begin until early December 2016. So if you’re having trouble closing your sunroof, or hear a strange noise when you do, chances are you’re about to give someone behind you a nasty surprise.