There are 1 owner-reported visibility & wipers complaints for the 2020 Mercedes-Benz GLB-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2020 Mercedes-Benz GLB250. The contact stated that while driving 65 - 70 mph, a loud noise was heard, and the sunroof glass exploded. The glass shards fell inside the vehicle. There was no impact on the sunroof that could have caused it to shatter. Another vehicle driving from behind the contact’s vehicle informed the contact that a gray object detached from the contact’s vehicle and hit the other vehicle’s frame and cracked the windshield. A police report was filed. No injuries were sustained. The vehicle was towed to the dealer. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 18,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026