2019 Mercedes-Benz GLA 250

On January 8, 2021, after ongoing review with Mercedes Benz, the National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation (ODI) opened PE21-001 to assess allegations of front roof panel detachments while driving at highway speeds in certain 2015 Mercedes-Benz (Mercedes) C-Class vehicles.The subject front roof panel is a stationary panel composed of polycarbonate and is attached to the vehicle via adhesive at the time of manufacture. The panel is found on subject vehicles equipped with panoramic sunroofs. Over time, the subject panels may exhibit cosmetic degradation leading to replacement of the panel, a procedure which entails: removal of the old panel and adhesive, site preparation, and installation of a replacement panel with new adhesive.The consumer complaints that prompted the opening of PE21-001 all described detachments of front roof panels that had been replaced after the vehicle was put into service.Mercedes' internal investigation identified a broader scope of affected vehicles (2014-2020 CLA, GLA, C, S, GLC, and GLE class) and found the following potential service procedure- related causes of front roof panel detachments:- Improper surface pretreatments such as the use of the wrong primer or cleaner or scoring of the surface; or - Use of the incorrect adhesive.These conditions lead to a front roof panel bond that, even if sound at the time of repair, cannot maintain its strength over time and environmental exposure.Mercedes updated its service and parts ordering systems to reinforce the proper use of specified kits and procedures via webinars, shop foreman meetings, and explicit reference to the risks incurred by diverging from the repair procedures. Mercedes is also furnishing parts ordering assistance, and will hold dealerships accountable for improper repairs.ODI's analysis of the ten complaints it has received from the public (VOQ's) and MBUSA's complaint data submitted in response to the information request letter for PE21-001 identified a total of 57 non-duplicative reports alleging incidents in which the front roof panel detached from the vehicle while in motion. Included within the 57 reports are incidents where consumers state the panel detached ...and flew off into traffic.On March 19, 2021, Mercedes notified NHTSA that it would recall subject vehicles with front roof panels known to have been replaced after the original sale of the vehicle. In total, the recall (designated as Recall 21V197) covers 15,099 vehicles that were ever registered in the United States. Based on Recall 21V197 and the remedy implemented by Mercedes, further investigation does not appear to be warranted at this time.Accordingly, this investigation is closed.The ODI complaints cited above can be viewed at www.nhtsa.gov under the following ODI identification numbers: 11376425, 11352686, 11351629, 11349158, 11341541, 11337594, 11324100, 11311591, 11222127, 11404183

My car had 78,530 miles on it when the rear differential binding causes shuddering/thumping during turns, which risks sudden wheel lockup or loss of control on sharp turns or low-traction surfaces. Please Note that Mercedes-Benz acknowledged this issue in TSB LI35.31-P-072105 but has not issued a safety recall. Dealer Diagnostic & Repair: Dealership confirmed a total component failure of the rear differential. The entire rear axle differential assembly (Part #A1763503100) and related hardware had to be removed and replaced. Total cost for rear axle replacement alone was $7,541.30.

NHTSA ID

11766491

Incident

Aug 26, 2026

The emergency braking system keeps coming on every time I go to drive, my car automatically shifts into neutral gear when driving and I have an error message saying that I can’t reverse. My seat will Not go further back and I have an air bag issue light

NHTSA ID

11710573

Incident

Jan 12, 2026

The contact owns a 2019 Mercedes-Benz GLA 250. The contact stated that while driving at an undisclosed speed, the transmission inadvertently shifted to neutral(N), causing a loss of drive power. The check engine warning light was illuminated, and the message "See Dealer" was displayed. The vehicle was restarted and driven to the residence. The vehicle was not yet diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to NHTSA Campaign Number: 21V033000 (Power Train); however, the VIN was not included in the recall. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 39,000.

NHTSA ID

11708296

Incident

Dec 31, 2025

Mileage

39,000 mi

The contact owns a 2019 Mercedes-Benz GLA250. The contact stated that while driving at approximately 70 MPH, several unknown warnings illuminated on the instrument cluster. The contact stated that upon depressing the accelerator pedal, the vehicle failed to respond while the engine revved. The contact pulled over to the side of the road and turned the vehicle off. Upon restarting the vehicle, no warning light was illuminated. The contact was able to drive to the destination without further incidents. The contact stated that the vehicle had been experiencing the failure intermittently. The contact had taken the vehicle to a local dealer, where it was diagnosed, and determined that the spark plugs and coils needed to be replaced. The vehicle was not repaired. The contact had called an independent mechanic, who advised that the failure was related to the transmission. Upon researching online, the contact related the failure to NHTSA Campaign Number: 21V033000 (Power Train); however, the VIN was not included. The manufacturer was informed of the failure and referred the contact back to the dealer for assistance. The failure mileage was 145,495.

NHTSA ID

11707506

Incident

Oct 6, 2025

Mileage

145,495 mi

I was driving my vehicle and it shifted into neutral and would not go back into gear until I pulled over to side of the road, turned it off and back on. A check engine light came on when I restarted the vehicle and I took the vehicle to the dealership for diagnosis. They told me they couldn't find an issue and reset the check engine light. A week later, I was driving on the freeway and it shifted into neutral again at 70 miles an hour. Luckily, I was in the right hand lane and was able to coast to the side. At that point I started looking online to see if others had this issue and came across this: Campaign No. : 2021020038 NHTSA ID: 21V033 Campaign Desc. : Replace Transmission Control Unit 21P5495403 Which is exactly what is happening to my vehicle

NHTSA ID

11703689

Incident

Aug 25, 2025

The contact owns a 2019 Mercedes-Benz GLA250. The contact stated that while driving at various speeds, there was an abnormal fuel odor entering the cabin of the vehicle. The contact stated that while the vehicle was started, the abnormal fuel odor was also on the outside of the vehicle. The vehicle was taken to a local independent mechanic, where it was diagnosed; however, the mechanic was unable to determine the cause of the failure. The contact stated that the vehicle was taken to several other independent mechanics; however, the failure could not be replicated. The local dealer was contacted. The vehicle was not diagnosed or repaired. In addition, the contact related the failure to NHTSA Campaign: 21V961000 (Fuel System, Gasoline); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 50,000.

NHTSA ID

11695763

Incident

Aug 15, 2025

Mileage

50,000 mi

My turn signals are not working and warnings are showing up on my dashboard. My pillars are both wet on the drivers side and passenger side. My speed odometer and tachodometer are not working. The dash board iis showing the brake and high beams are on but they aren't on. I have fog on the front window when I get in the car. This situation is of major concern for my safety. I am not certain that the air bags would work? I refuse to drive this vehicle. I called Mercedes Benz in Wilmington, NC and I can't get an appointment until October 13th. I see in the Mercedes Benz recall that the sun roof and electrical problem were recalled.in 2019. I have a Mercedes Benz GLA 250 2019 and that was in the article. Mercedes told me my vin number was not included in the recall. I have the exact same problems as the other vehicles that were recalled. I appreciate your help in this matter to be put on the recall list. This is a major recall issue. I am in fear for my safety to drive with all the electric issues that exist as a part of this recall. Please notify me once this is approved so that I can call my dealership and have this issue resolved. I appreciate your immediate attention to this matter as this is my only transportation. Thank you for your attention in this matter [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11690737

Incident

Sep 25, 2025

Structure body: roof and pillars affected Recall ID: 450977 year 2014- 2020 NHTSA campaign # 23v854000 Vehicle affected 2,976 A detached roof panel can become a road hazard, increasing the risk of a crash. The vehicle is making a loud noise from the panoramic soon roof.

NHTSA ID

11685719

Incident

Aug 4, 2025

Complaint Noises in the steering column area when steering. See example file in the attachments area: "MRSM‑Schleifgeräusch_SCCMGrindingNoises. MOV". Cause Under analysis. Remedy Check which area of the steering column the noises occur in. Do the noises tend to occur at the bottom in the driver footwell or do they tend to occur in the area of the steering column switch module (MRSM/SCCM)? If the noises occur in the area of the MRSM/SCCM, work through the following points: ‑ Loosen screws of the MRSM/SCCM and steering wheel, re‑align the MRSM/SCCM, and re‑fasten the screws (see WIS). Sometimes there is stress at the MRSM/SCCM and noises occur. ‑ If noises continue to occur, swap the MRSM/SCCM into a vehicle without any (noise) complaints. ‑ If the noises occur with the MRSM/SCCM complained about when it is in the vehicle without a complaint (donor vehicle), the MRSM/SCCM can be replaced. ‑ If noises also occur in the customer vehicle with the MRSM/SCCM from the reference vehicle, the MRSM/SCCM is not the cause and must not be replaced. Notes: ‑ When installing the MRSM/SCCM, make sure that no damage occurs! ‑ If the noise is due to the steering wheel (see attachment "Lenkrad‑Schleifgeräusch_SteeringWheel‑GrindingNoises.mp4"), please use LI46.10‑P‑077313. ‑ Only disassemble and mount all component parts in the "straight‑ahead position" (see also WIS). ‑ Please refer to this LI in the "Notes" section of the warranty claim!

Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration is most likely due to excessive lateral runout on the rotor or hub/wheel bearing, the system as a whole needs to be checked for other possible contributors. 1. Prior collision damage. 2. Excessive vehicle sitting times without rotating components. 3. Wheel bearing/hub lateral runout. 4. Wheel mating interface has been overtightened (did not follow WIS torque procedures). 5. Mating interfaces have been excessively modified (painted, gouged, bent, etc...). Remedy Read through the entire attached worksheet prior to performing. After performing, please review the final page and perform work accordingly. NOTE: This document is not pre‑authorization or otherwise dealing with warranty. This is intended for diagnostic purposes only. If there are any questions on how to proceed OR The work sheet has been performed and the vehicle has returned with the same concern. Please perform the measurements as seen in the worksheet again and open a TIPS case to the Body, Chassis, and Entertainment team.

Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Note: Please refer to this document in the warranty claim and, once diagnosis is completed, select the damage code depending on the component part that is causing the issue. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10‑P‑067691. Information: In this case, do not use a damage code for the speakers in the warranty claim!

Complaint Intermittent shift feel or thud/clunk noise perceived, such as a brief jerk or transmission reaction during certain driving situations. May be most noticeable when transitioning from a coasting condition to accelerator pedal application. May occur in all drive modes. Cause Dual‑clutch transmissions (DCT) inherently exhibit more dynamic shifting behavior compared to other types of transmissions. This is due to the use of physical clutches for starting and gear changes. In certain situations, dynamic driving behavior can lead to a slight jerk sensation which is a normal technical characteristic of the transmission. A typical example is a "Change of Mind" situation: • The customer is coasting towards a red traffic light. • The traffic light turns green while the vehicle is still coasting. • The customer then presses the accelerator pedal. In these situations, a slight jerk may occur briefly because the transmission must quickly engage the appropriate gear and control the clutches accordingly. Since shift forks are responsible for engaging the gears during shifting, a slight shifting noise may also be noticeable. Please note driving programs S, S+, and M are designed to provide sportier vehicle behavior and are not optimized primarily for maximum comfort, so this operation may be more audible. Remedy Verify the customer's concern and confirm proper transmission operation. If no faults or abnormal operating conditions are identified by IPR (Intelligent Predictive Repair), no hardware replacement is necessary. Inform the customer that the transmission has been designed to provide direct gear engagement and responsive vehicle performance. Under certain operating conditions, brief shift sensations may be perceptible and are consistent with the operating characteristics of the dual‑clutch transmission

Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage Detection ("DMTL") on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership. Why the Warranty extension? On certain Model Year 2018 - 2024 A / C / CLA / CLS / E / G / GLA / GLB / GLC / GLE / GLS / GT / S / SL Mercedes-Benz vehicles, under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code ("DTC") entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp ("MIL"). Any repairs under this warranty extension must be performed by an authorized Mercedes-Benz dealership. • If your preferred authorized Mercedes-Benz dealership performs a diagnosis and confirms that your vehicle has the issue, the repair will be covered under this extended warranty and performed at no cost to you. • This extended warranty does not apply to any other components or conditions beyond the ones mentioned above, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.

Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Information: Please refer to this document in the warranty claim and, after completing diagnosis, select the damage code corresponding to the component part that caused the problem. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10-P-067691. Information: In this case, do not use a damage code for the speakers in the warranty claim!