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What 38 owners told NHTSA about the 2020 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 (38)Crash / fire / injury (5)Electrical system (18)Engine (9)Fuel system (8)Driver assistance (7)Transmission & drivetrain (4)Airbags (2)Backup camera & sensors (2)Body & structure (2)Brakes (2)Suspension (2)

1 of 38 complaints match · Backup camera & sensors · crash/fire/injury only · clear filters

May 7, 2024BrakesBackup camera & sensorsDriver assistanceCrash

Today around 6:47pm. I was reversing my car and I noticed another car in my backup camera and tried shift the gear shift to drive but it didn't work and stayed stuck on reverse and would not moved and the brake pedal and emergency brake wouldn't work.

NHTSA ODI 11587350

Working with the data? Download all 38 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 2020 Mercedes-benz GLS verdict →