Home · 2020 Mercedes-benz GLS · Complaints
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.
2 of 38 complaints match · Body & structure · clear filters
Window trim on the passenger rear window fell off while driving- it put others at risk by flying off the vehicle on the interstate- Mercedes Benz of Omaha quoted replacement of the window trim parts- no warning messages on dash
NHTSA ODI 11738164
The contact owns a 2020 Mercedes Benz GLS. The contact stated that while driving on the highway, the rear door window trim bars on the passenger side detached from the window. The vehicle was taken to the dealer where they diagnosed as a rear door window trim detachment however the vehicle was not repaired. The manufacturer was not notified of the issue. The approximate failure mileage 65,000.
NHTSA ODI 11738177
Working with the data? Download all 38 complaints as CSV · fetched from NHTSA July 20, 2026