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What 10 owners told NHTSA about the 2023 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 (10)Brakes (4)Engine (4)Driver assistance (2)Electrical system (2)Fuel system (2)Body & structure (1)Lane Departure (1)Transmission & drivetrain (1)Wheels (1)

1 of 10 complaints match · Transmission & drivetrain · clear filters

Jul 9, 2024Transmission & drivetrainElectrical systemEngine

Car just stopped abruptly on highway. We tried to shut off and restart. Nothing worked. All emergency signs showed up on dashboard. Highway road assistance guy tried to put it in neutral..it did nit work. We were scared to death siting on i 278 with trucks,buses coming behind us. Car just abruptly stopped

NHTSA ODI 11600489

Working with the data? Download all 10 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 2023 Mercedes-benz GLS verdict →