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What 76 owners told NHTSA about the 2012 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 (76)Crash / fire / injury (6)Airbags (40)Brakes (10)Suspension (7)Transmission & drivetrain (5)Engine (4)Electrical system (3)Fuel system (3)Electronic Stability Control (esc) (2)Seat belts (2)Body & structure (1)

1 of 76 complaints match · Brakes · crash/fire/injury only · clear filters

Jul 13, 2022BrakesCrash

The contact owns a 2012 Mercedes-Benz GL 450. The contact stated while driving approximately 45 MPH, the brake pedal was depressed but failed to stop the vehicle causing him to crash into the vehicle in front. There were no warning lights illuminated. Both air bags under the steering wheels deployed. The vehicle was towed to the residence. The police arrived on the scene and filed a report. The front of the vehicle hood, bumper, and radiator was destroyed. There were no injuries or medical treatments. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The contact related the failure to NHTSA Campaign Number 22V315000 (Service Brakes, Hydraulic). The approximate failure mileage was unknown.

NHTSA ODI 11473677

Working with the data? Download all 76 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 2012 Mercedes-benz Gl-class verdict →