This incident occurred on January 20, 2023. I was driving alone on I-73 in Greensboro, NC. It was around 5:45 AM and was about 40 degrees outside. I had no vehicles in front of me and a very large separation to the vehicles in the oncoming traffic direction. The car was still new as it only had 4k miles on it. I was driving at 65mph merging onto I-73. Suddenly, I heard what sounded like an explosion followed by what sounded like flapping and "pebbles hitting roof" sound. I knew something had broken so I pulled off the road. My moonroof had shattered. I took pictures while I was trying to determine my next step. There was a hole in the center and part of the right side of the glass. I did not have any way to contain the damage when it was put on the flat bed trailer to take it to the dealership. I dropped by the dealership later that day. The hole had grown significantly while being towed to the dealer (wind damage expanded the hole). The dealership said it was the second Outback they had seen that week for an exploding moonroof. They stated it would not be covered under warranty, but they did replace it as a one-time goodwill gesture. Searching online, this seems to be way more common of an experience than it should be with Subaru Outbacks. If I had had the interior closeout panel open, I would have been covered in glass. I feel this was not damage induced by any impact as there were no cars near me within at least 100 yards in any direction.
NHTSA ODI 11513158