What 49 owners told NHTSA about the 2018 Mercedes-benz GLA

I am filing a complaint regarding my 2018 Mercedes-Benz GLA 250. My vehicle recently triggered a check engine light and was diagnosed by an independent mechanic with code P052E, related to the positive crankcase ventilation regulator valve / crankcase ventilation system. My mechanic advised that this issue appears to be similar to a known Mercedes-Benz issue affecting other model years and/or related Mercedes models. Mercedes-Benz has issued an emissions extended warranty/service coverage for a similar crankcase ventilation / intake line assembly issue on other vehicles, including fault code P052E71. However, my vehicle does not appear to be included despite having the same or very similar failure code and system issue. I am concerned that this may be a broader defect affecting additional Mercedes vehicles beyond the models currently covered. The issue involves the crankcase ventilation/PCV system and may require repair of related intake line, valve cover, oil separator, or ventilation valve components. I believe this should be reviewed because owners of vehicles with the same failure pattern may be responsible for costly repairs even though the issue appears similar to one Mercedes has already acknowledged on other models. I am requesting that NHTSA review whether 2018 Mercedes-Benz GLA 250 vehicles should be included in any related recall, defect investigation, emissions warranty extension, or service campaign related to code P052E / P052E71 and the crankcase ventilation regulator valve system.

NHTSA ODI 11745674

Why is the Crankcase Ventilation System P052E Code (PCV) covered in most Mercedes models, but not the GLA? This is an expensive repair that seems to cover other cars but penalizes GLA owners just to have a safe car to drive like the other models. I strongly believe GLA should be on the recall list for the matter, as it is dangerous to drive on the road, especially for those who cannot afford to fix it for upwards of $1,500 to $2000.

NHTSA ODI 11720771

This vehicle has a transmission control module defect. While driving, the car cuts off unexpectedly and prevents shifting gears, creating a serious safety risk that could easily cause an accident. A certified Mercedes-Benz dealer diagnosed the problem and confirmed it is an internal defect—one that cannot be prevented by regular maintenance or proper care of the vehicle. Because this is an internal issue, Mercedes-Benz should take immediate responsibility to repair it, rather than delaying or shifting accountability.

NHTSA ODI 11687218

The contact owns a 2018 Mercedes-Benz GLA250. The contact stated that while driving at an undisclosed speed, the vehicle stalled. There were no warning lights illuminated. The contact stated that there was a fuel odor coming from the vehicle. The vehicle was towed to the dealer where it was diagnosed that the fuel injectors had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure by the dealer. The approximate failure mileage was 196,077.

NHTSA ODI 11644599

Positive Crankcase valve malfunction

NHTSA ODI 11632335

Positive Crankcase Ventilation Regulator Valve - Code P052E This Recall are mentioned for other models with same year 2017 - 2020 But why not for GLA250. it's same problem and Dealer quote me $1500 - $2000 for Repair [XXX] Following threads prove there's lot of owners with same issue. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11608936

My Car's warranty expired in Dec 2022 and a few months later the engine light came on. It stayed on for a few weeks than was turned off by itself. In Dec 2023, the engine light came back on again. I also noted jerks when driving slow (10 miles/h). Upon checking with Mercedes Benz of Tri Cities-Richland, WA, spending $400 on diagnostics, the staff quoted me $3500 for Crank Case Ventilation replacement. This is a really expensive part/labor and it is ridiculous that Mercedes does a poor job! A quick online search proved that this issue is pretty common in MBenz models, there should definitely be a recall. This is inconvenient and appropriate actions should be undertaken against this.

NHTSA ODI 11585554

In July 2022 I was a few miles from my home when the cluster starting showing warning lights. It started scrolling inoperative power brakes, inoperative steering and inoperative parking. Also the cluster was completely lit up. I turned the car around and put it in my garage. This is where the issues really started. The car would not go into park or turn off. I sat with my foot on the brake for 30 minutes trying to continue turning the car off or put in park. I finally had my wife take the key and walk 1/8 mile away before the care would turn off. I had the car flat bedded to Mercedes of Cherry Hill. They had the car for several days. They called me and asked if the car was flooded or hit. I told them no to either. I explained how the car is garage kept. I was talking to my mechanic who services the car and started telling him the story. Before I could say anything he asked me if they asked me if the car was flooded? I said how did you know that? He told me that he has several customers with similar issues with the wiring harness in the front bumper. He told me that it's a bad design where water gets in and burns the harness out. The scary issue is the car not turning off or going into park. If my wife who drives the car was by her self had this issue what would she do?

NHTSA ODI 11493542

CAR BATTERY DIES IF VEHICLE NOT DRIVEN OFTEN AND/OR FOR LONGER DISTANCES. THIS WAS NOT EXPLAINED AT TIME OF SALE NOR DOES MANUAL MENTION. THERE IS NO WARNING LIGHT THAT BATTERY IS LOW. NO FIX. TOLD I SHOULD HOOK UP TO TRICKLE CHARGER. VEHICLE IS STATIONARY.

NHTSA ODI 11321182

THE PROBLEM IS WHEN TRAVELLING AT LOW SPEEDS OR STOP THE CAR TO HALT ABLE TO HEAR A NOISE FROM THE REAR END. LIKE A METAL HITTING ANOTHER METAL. IT HAS BEEN ONLY 1 MONTH I BOUGHT THE CAR AND 1300MILES ON IT. THE CAR IS MAKING REALLY LOUD NOISE WHEN STOPPED AND HEAR IT PROPERLY. IT IS MAKING CLING CLING NOISE. I REALLY WORRIED ABOUT THIS ISSUE. I ALMOST OBSERVE EVERYDAY.

NHTSA ODI 11040373