Home · 2021 Mercedes-benz Gl-class · Complaints

What 61 owners told NHTSA about the 2021 Mercedes-benz Gl-class

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 (61)Crash / fire / injury (2)Engine (29)Fuel system (11)Lights (10)Electrical system (7)Visibility & wipers (4)Backup camera & sensors (3)Body & structure (3)Driver assistance (3)Transmission & drivetrain (3)Speed control (2)

4 of 61 complaints match · Visibility & wipers · clear filters

Jul 18, 2025Electrical systemLightsVisibility & wipers

Have been getting condensate inside vehicle headlights inwhich have cause the headlight to completely not work anymore.. There is no damage to headlight which means to be cause due to a problem with the seal. Checked with local and also statewide Mercedes advisors which was told there isn’t a recall for my vehicle inwhich I looked online and found an recall for vehicles just like the one I have.. Recall number 22V261000-Recall Date 04-14-2022. I’m asking for my vehicle to be inspected and repaired free of charge . Thanks and sorry for the bother - Can’t drive vehicle at night due to headlight malfunction and it’s very unsafe for me and kids and family

NHTSA ODI 11674539

Jun 6, 2024Visibility & wipers

The contact owns a 2021 Mercedes-Benz GLC300. The contact stated that while his spouse was driving approximately 35 MPH, the passenger’s side side-view mirror fractured without impact. The dealer was contacted to schedule an appointment; however, the vehicle had not been taken to the dealer to be diagnosed or repaired. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 25,000.

NHTSA ODI 11592811

May 30, 2022Body & structureVisibility & wipers

Sunroof glass panel exploded outward. Fabric retractable interior sunroof liner did contain all of the fragmented safety glass. No prior impact on or to the sunroof. If the interior fabric sunroof liner had been retracted, the interior of the vehicle would have been showered with the glass shards impacting the driver and all passengers. There was no warning. A loud sound similar to gunshot occurred as the sunroof failed. The vehicle was driven to a local windshield repair facility for examination. I contacted and notified Mercedes Benz USA of the incident. They have not done a follow-up as of this date. I contacted Mercedes Benz of Anchorage AK and will do a follow-up with that dealership on May 31 2022.

NHTSA ODI 11466660

Jul 9, 2021Visibility & wipers

On day zero when I bought the car, it was raining. The new car wiper was shattering or making bumpy movements. It was not cleaning the heavy rain water or it was spotty. The Mercedes mechanic told it is a known issue and there is no permanent fix. They just changed the wiper blade and put solvent on windshield which may be good for few days/weeks and need to take the car everytime, I have this issue till I have warrantee. This is very annoying and safety issue in Houston rainy season. It can happen anytime in the middle of busy road and under rain.

NHTSA ODI 11424110

Working with the data? Download all 61 complaints as CSV · fetched from NHTSA July 26, 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 Gl-class verdict →