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What 51 owners told NHTSA about the 2016 Mercedes-benz GLA

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 (51)Crash / fire / injury (1)Engine (15)Airbags (8)Electrical system (5)Fuel system (5)Transmission & drivetrain (5)Visibility & wipers (4)Brakes (3)Speed control (3)Driver assistance (2)Electronic Stability Control (esc) (2)

5 of 51 complaints match · Fuel system · clear filters

May 3, 2024EngineFuel system

The contact owns a 2016 Mercedes Benz GLA. The contact stated that the check engine light had appeared on the instrument panel. The vehicle was taken to a dealer where a diagnostic was performed. The dealer determined that the crankcase ventilation valve had malfunctioned which blocked the actuator. As a result, both the fuel and the oil had started to mix inside the engine which caused the ventilation valve to not close as intended. The contact was given an estimate for repair. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 63,000.

NHTSA ODI 11586706

Apr 5, 2024EngineFuel system

Following regular maintenance of my 2016 GLA 250 with my mechanic for the car repeatedly stalling, the mechanic discovered there is a fuel leak causing the fuel injectors and fuel rall to not get proper fuel injection. The mechanic found a manufacturer’s recall for the make, model, and year of my car. My car’s VIN# says this particular car is not affected. However, the exact issue is presenting in my car, which can cause significant engine damage. It’s believed my car, with the same make, model& year, is indeed impacted by this issue. My VIN should be considered to be included to have this recall.

NHTSA ODI 11581399

Sep 25, 2023Fuel system

Smell of gas when turning on heater, fuel leaking on engine block

NHTSA ODI 11546494

Sep 9, 2021Fuel system

The check engine light came on. The code reads Emission. They told me it wasn’t covered at Mercedes

NHTSA ODI 11432234

Nov 9, 2020Speed controlEngineFuel system

I WAS DRIVING MY CAR IN MOTION AND WITHOUT ANY WARNING, THE CAR DECELERATED AND SUBSEQUENTLY STALLED WHILE I WAS TRAVELING ON I-85 IN GAFFNEY SOUTH CAROLINA. IT WENT FROM 50 TO 0 LEAVING ME STRANDED ON THE HIGHWAY. IT WAS TOWED TO MERCEDES BENZ OF SOUTH CHARLOTTE WHERE I WAS TOLD THAT IT WAS COMPLETE ENGINE FAILURE

NHTSA ODI 11373880

Working with the data? Download all 51 complaints as CSV · fetched from NHTSA July 19, 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 2016 Mercedes-benz GLA verdict →