One problem related to sun/moon roof assembly has been reported for the 2020 BMW 330. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 BMW 330 based on all problems reported for the 2020 330.
The contact owns a 2020 BMW 330i. The contact stated while driving approximately 65 mph, there was a loud boom that came from the sunroof. The contact pulled over and noticed that the sunroof had shattered. The contact had not taken the vehicle to the dealer. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 75,000.