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What 41 owners told NHTSA about the 2017 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 (41)Crash / fire / injury (8)Electrical system (8)Engine (8)Fuel system (6)Lights (6)Steering (4)Seats (3)Transmission & drivetrain (3)Body & structure (2)Suspension (2)Brakes (1)

1 of 41 complaints match · Brakes · clear filters

Apr 18, 2019Fuel systemBody & structureBrakes

2017 MERCEDES BENZ GLS450. CONSUMER WRITES IN REGARDS TO MALFUNCTIONING BRAKES. *LD THE CONSUMER STATED THE VEHICLE EXPERIENCED PREMATURE WEAR OF THE BRAKES. THE VEHICLE LEAKED FUEL. THE INTERIOR DOOR TRIM WAS NOT SECURE. *JS

NHTSA ODI 11196350

Working with the data? Download all 41 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 2017 Mercedes-benz GLS verdict →