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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)

1 of 100 complaints match · Brakes · crash/fire/injury only · clear filters

Jul 24, 2019Speed controlBrakesCrash4 injuries

I WAS DRIVING TO MEET A FRIEND FOR LUNCH. I CAME UP UPON A STOP LIGHT THAT WAS ALREADY RED AND I WOULD HAVE BEEN THE THIRD CAR IN LINE. I CAME TO WHAT I THOUGHT WAS A STOP. I WAS ABOUT A CAR LENGTH OR MORE BEHIND THE CAR IN FRONT OF ME. NEXT THING I KNOW, I HEAR A LOUD BANG AS MY CAR HAD ACCELERATED INTO THE CAR IN FRONT OF ME WITH MY FOOT ON THE BRAKE. THAT CAR, IN TURN, HIT THE CAR IN FRONT OF THEM. I WAS VERY CONFUSED. I RECEIVED A TRAFFIC TICKET FOR UNCONTROLLED SPEED. THE POLICEMAN THOUGHT I WAS I WAS CRAZY WHEN I SAID THAT I HAD COME TO A STOP. THE CAR WAS DRIVABLE, SO I STILL WENT TO LUNCH WITH MY FRIEND. NO PROBLEM WHATSOEVER WITH PARKING OR DRIVING THE CAR TO THE RESTAURANT, WHICH WAS ABOUT 1 MILE AWAY. AFTER LUNCH, I THEN NEEDED TO RUN AN ERRAND BEFORE I WENT HOME. I DROVE ABOUT 2 BLOCKS AWAY FROM THE RESTAURANT AND PULLED INTO A SHOPPING CENTER. I THEN SLOWLY PULLED INTO A PARKING SPOT BETWEEN TWO OTHER CARS. AS MY CAR HIT THE CURB, IT THEN WENT OVER THE CURB, ONTO THE SIDEWALK AND SLAMMED INTO THE CONCRETE WALL OF ONE OF THE SHOPS. I WAS ABLE TO GET HOME, VERY SHAKEN, AND RESEARCHED ON THE INTERNET. EVERYTHING I FOUND INDICATED IT WAS SUDDEN UNINTENDED ACCELERATION (SUA). I TOLD MY INSURANCE COMPANY AND ALSO CALLED MERCEDES BENZ USA. I HAD MY CAR TOWED TO THE MERCEDES COLLISION REPAIR SHOP. MERCEDES DID A RECORDED CONVERSATION AND SAID NOT TO HAVE THE CAR REPAIRED AND THEY WOULD LOOK AT IT. THEY WERE DEFENSIVE WHEN I MENTION SUA, BUT MY MAT IS VELCROED ON AND IT HAPPENED TWICE IN ONE DAY. AFTER THE SECOND COLLISION, I SAW A MESSAGE ON MY DASH THAT SAID : ?COLLISION PREVENTION ASSIST PLUS INOPERATIVE". MY AIRBAGS NEVER DEPLOYED. I CHECKED AT THE MERCEDES COLLISION CENTER TODAY AND WAS TOLD MERCEDES REMOVED A BLACK RECORDING BOX FROM MY CAR. I HAVE NOT HEARD ANYTHING BACK AS OF YET. I AM AFRAID TO DRIVE THIS CAR EVEN IF IT IS REPAIRED.*DT *DT *TR

NHTSA ODI 11234599

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 →