Feb 1, 2026Lane DepartureDriver assistance
Collision Prevention Assist Plus Inoperative Light on the dashboard it appears often and beep I am not sure and why
NHTSA ODI 11714841
Home · 2015 Mercedes-benz GLA · Complaints
What 100 owners told NHTSA about the 2015 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 (100)Crash / fire / injury (5)Engine (31)Transmission & drivetrain (15)Airbags (13)Electrical system (13)Body & structure (12)Fuel system (12)Visibility & wipers (10)Brakes (5)Driver assistance (4)Electronic Stability Control (esc) (3)
4 of 100 complaints match · Driver assistance · clear filters
Apr 17, 2024Fuel systemDriver assistance
Engine Light Came up & CollIsion Warring Massage Show Up
NHTSA ODI 11583514
Dec 30, 2022BrakesDriver assistance
Had an update on the software to control collision prevention on the car, and soon afterward it began to deploy at certain spots without any other car in front for at least 50 feet. Took it back to the M-B Seattle dealer and after 4 weeks of investigation, I was told that the matter is exterior to the car and that the car performs as intended. T still drive the car and it still gives me warnings of impending to engage the collision detection braking system. I don't feel very comfortable driving it in the city.
NHTSA ODI 11499518
May 14, 2021Transmission & drivetrainDriver assistance
THE VEHICLE SLIPS INTO NEUTRAL AND SAYS 4 MATIC NOT AVAILABLE. I HAVE TO COAST TO A STOP AND THEN SHUTOFF THE VEHICLE, TURN IT OFF AND THEN RESTART IT. ALSO THE FORWARD COLLISION WARNING ALERTS WHEN I PASS UNDERNEATH A LARGE METAL FREEWAY SIGNAGE.
NHTSA ODI 11416606
Working with the data? Download all 100 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 2015 Mercedes-benz GLA verdict →