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What 49 owners told NHTSA about the 2018 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 (49)Crash / fire / injury (4)Electrical system (10)Engine (10)Fuel system (6)Transmission & drivetrain (6)Airbags (5)Wheels (5)Body & structure (4)Driver assistance (3)Visibility & wipers (3)Backup camera & sensors (2)

1 of 49 complaints match · Driver assistance · crash/fire/injury only · clear filters

Feb 13, 2022Driver assistanceCrash

I was driving the car at about 70 mph on an interstate highway during "rush hour" traffic when the Electronic Stabilization icon flashed on the dashboard screen and the car began to decelerate. I pressed on the accelerator pedal but the car continued to coast. A second or two later the dashboard screen flashed a warning stating something like "Brake assist activated" and the vehicle began to aggressively brake. I was in the middle lane of the interstate with vehicles around me travelling at 65 to 75 miles per hour and I could see a car rapidly approaching me from behind. It was apparent to me that my vehicle was going to come to a rapid stop in the middle of a busy interstate highway and that I was going to be struck from behind by one or more cars travelling at a high rate of speed. I did not think that I would survive such an impact and checked the right hand lane and noted no vehicles. Since all I could do with the car at that point was steer, I pulled my car into the right hand lane, attempting to avoid an inevitable high speed rear end collision. Unfortunately by that time my vehicle was still braking and travelling at a relatively low speed and was struck in the right rear area by another vehicle that was travelling at a much higher speed. Fortunately no one was injured in this crash, but there was extensive damage to both vehicles. I had not previously experienced this type of malfunction of the emergency collision avoidance system but on reviewing Mercedes Benz owners' blogs it is clear that this is not an isolated occurrence. I note that the owners of other car manufacturers have also experienced issues similar to mine, although most of them occurred in less dangerous situations and did not result in a crash. I believe that this "safety" system is flawed and placed my life, and the lives of others, in grave danger, much like the Boeing 737 Max issue, and that a recall and investigation is needed to prevent fatalities resulting from their malfunction.

NHTSA ODI 11451776

Working with the data? Download all 49 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 2018 Mercedes-benz GLA verdict →