The contact owns a 2021 Volkswagen Atlas. The contact stated that while her husband was driving at an undisclosed speed, there was a loud explosion before shards of glass fell from the moon roof onto the rear center seat. There was no impact to the moonroof to have caused the moon roof glass to explode. There were no injuries sustained. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 50,000. The VIN was unavailable.