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What 36 owners told NHTSA about the 2021 Mercedes-benz GLS

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (36)Crash / fire / injury (5)Electrical system (16)Engine (4)Driver assistance (3)Lane Departure (3)Fuel system (2)Seats (2)Visibility & wipers (2)Airbags (1)Body & structure (1)Seat belts (1)

1 of 36 complaints match · Airbags · crash/fire/injury only · clear filters

Dec 17, 2021AirbagsCrash1 injury

The contact owns a 2021 Mercedes Benz GL550. The contact stated that while driving 30 -35 mph an unknown vehicle crossed her path, the driver depressed the brake pedal but was unable to stop before colliding with a vehicle. The steering wheel air bag split open and deployed. The contact sustained injuries, the inside of her right arm was cut. The air bags on the floor deployed and contact sustained severe burns on her shin medical attention was provided. The contact stated she still has an open wound. The distance warning indicator light was illuminated. There was no reported fire. The police were on the scene however, there was no police report filed. The vehicle was towed to an independent lot. The local dealer was contacted but the vehicle was not diagnosed. The manufacturer was contacted but, no further assistance was provided The failure mileage was approximately 3,000. The contact mentioned the floor air bag was removed by the tow company. The VIN was not available. UPDATES- Due to the impact of the airbags on the floor, it caused major bruising, restricted blood flow and two hematomas to my right shin. In August of 2020 I had major surgery to remove the hematoma and healing for this open wound took seven months. I have a major scar on my right shin. Additionally, I have a scar on the inside of my lower right arm as the airbag on the steering wheel split open and cut my arm. Steigler Automotive Repair, in Reseda, California repaired all damages to my vehicle (approximately $30,000k) and the car was released back to me.

NHTSA ODI 11444154

Working with the data? Download all 36 complaints as CSV · fetched from NHTSA July 20, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2021 Mercedes-benz GLS verdict →