2019 Mercedes-Benz CLA 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

1. The suspected component is the rear differential/rear axle assembly in my 2019 Mercedes-Benz CLA 250 4MATIC. The vehicle has developed abnormal knocking, popping, and drivetrain noises, particularly during turning and low-speed maneuvering. A repair facility provided an estimate of approximately $8,180 to replace the rear differential assembly. I am requesting further review to confirm the exact cause of the failure. The vehicle and any removed components may be made available for inspection upon request, subject to repair arrangements and retention of the original parts. 2. The abnormal rear drivetrain noises raise concerns about the reliability and safe operation of the vehicle. Because the suspected issue involves the rear differential/drivetrain, I am concerned that an unresolved mechanical problem could worsen and potentially affect vehicle control or safe operation. I have not established that a loss of control or other specific safety event has occurred, but I am requesting that the condition be investigated to determine whether it presents a safety risk. 3. An independent repair facility evaluated the vehicle and provided an estimate of approximately $8,180 for rear differential replacement. However, I am seeking further confirmation of the precise failure and its cause. 4. The vehicle has been evaluated by an independent repair facility, which provided an estimate for rear differential replacement. Mercedes-Benz has not yet inspected the vehicle or confirmed the diagnosis. I have not had the vehicle inspected by police or insurance representatives in connection with this issue. Before the proposed repair, I noticed abnormal knocking and popping noises while driving and turning. The symptoms prompted me to seek a mechanical evaluation, after which I received an estimate for rear differential replacement. To my knowledge, no warning lamps or dashboard messages appeared before the symptoms began. I do not have a confirmed date of the noises.

NHTSA ID

11770966

Incident

Sep 14, 2026

To Whom It May Concern, I am writing to file a formal safety complaint regarding my 2019 Mercedes-Benz CLA250 involving a leaking fuel rail that caused the vehicle to shut down and become unsafe to operate. The failure of the fuel rail resulted in a fuel leak and engine shutdown. A failure within the fuel delivery system presents a serious safety concern, as it can cause sudden loss of power while driving and poses a potential fire hazard if fuel comes into contact with hot engine components. During the repair process, I was informed that the necessary replacement component, Fuel Rail Part Number 2700701995, is no longer being produced by Mercedes-Benz. Because this critical component is unavailable, the vehicle cannot currently be repaired and is therefore undrivable. It is deeply concerning that a safety-related fuel system component for a 2019 vehicle is no longer available. Without access to this essential part, the vehicle is effectively disabled. Additionally, based on the nature of this failure, I believe this fuel rail defect should be included in the recall list for this vehicle. A leaking fuel rail capable of shutting down the engine represents a significant safety risk that may affect other vehicles of the same model. I have attempted to contact Mercedes-Benz Customer Care at [XXX] on seven separate occasions and have left messages requesting assistance, but I have not received a return call. Because this issue involves both a serious fuel system failure and the inability to obtain a critical replacement part, I respectfully request that the National Highway Traffic Safety Administration investigate whether this defect affects other 2019 Mercedes-Benz CLA250 vehicles and determine whether a recall is warranted. Vehicle Information: Year: 2019 Make: Mercedes-Benz Model: CLA250 VIN: [XXX] Part in Question: Fuel Rail – Part No. 2700701995 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11723718

Incident

Mar 6, 2026

The sunroof is off the track. There seems to have been a recall for my make and model and year of vehicle (2019 Mercedes CLA 250) though Mercedes tells me that my vin # is not among those that were recalled. However, they told me that if I could reach out to NHTSA, that it would be possible that my vehicle would be added to the recall, which would force Mercedes to have to repair the issue at their cost, so this is me doing that.

NHTSA ID

11719214

Incident

Feb 7, 2026

JUST PAID $4,154.67 TO HAVE MY 2019 MERCEDES CLA 250, WITH JUST 46,222 MILES, ENGINE REPAIRED. * REPACE FUEL INJECTOR SEALS/ORINGS $1,462.80 *REPLACE ALL 4 FUEL INJECTORS $2,512.62 SO, PLEASE TELL WHY THERE IS NO RECALL ON MY CAR????? MARK BOULTINGHOUSE (240)277.9752

NHTSA ID

11718332

Incident

Jan 21, 2026

My 2019 Mercedes-Benz CLA 250 has become unsafe to drive due to strong gasoline fumes filling the cabin. The smell is overwhelming and makes it difficult — and frankly dangerous — to sit in the vehicle for more than a few minutes without feeling lightheaded. I have since learned that this issue is part of a known defect covered under NHTSA Recall #21V961, which affects 2016–2020 CLA 250 models for a fuel leak and potential fire hazard. Despite the recall directly describing this exact problem — fuel vapors entering the passenger compartment — I was told that Mercedes-Benz will not cover the repair costs, even though the recall was never performed on my car. This is deeply concerning, as gasoline fumes inside the cabin pose not only a serious health risk from inhalation but also a potential fire or explosion hazard. It’s unacceptable that a manufacturer would refuse to remedy a safety recall issue, especially one involving a known fuel system defect that could endanger both the driver and passengers. I’m left with a car that’s unsafe to drive and a manufacturer unwilling to take responsibility for a problem they’ve already acknowledged through the NHTSA.

NHTSA ID

11701109

Incident

Nov 23, 2025

My 2019 Mercedes-Benz CLA 250 has become unsafe to drive due to strong gasoline fumes filling the cabin. The smell is overwhelming and makes it difficult — and frankly dangerous — to sit in the vehicle for more than a few minutes without feeling lightheaded. I have since learned that this issue is part of a known defect covered under NHTSA Recall #21V961, which affects 2016–2020 CLA 250 models for a fuel leak and potential fire hazard. Despite the recall directly describing this exact problem — fuel vapors entering the passenger compartment — I was told that Mercedes-Benz will not cover the repair costs, even though the recall was never performed on my car. This is deeply concerning, as gasoline fumes inside the cabin pose not only a serious health risk from inhalation but also a potential fire or explosion hazard. It’s unacceptable that a manufacturer would refuse to remedy a safety recall issue, especially one involving a known fuel system defect that could endanger both the driver and passengers. I’m left with a car that’s unsafe to drive and a manufacturer unwilling to take responsibility for a problem they’ve already acknowledged through the NHTSA.

NHTSA ID

11698613

Incident

Nov 10, 2025

As i was driving on the freeway the front acylic panel conected to the sun roof just fell off the car nearly striking another vehicle. I have bein seeing alot of other ppl are having this issue yet it has not been recalled

NHTSA ID

11690040

Incident

Sep 14, 2025

Nov 29, 2024. Check engine light goes on. Took it to the dealership and says P052E-71, crank ventilation malfunction, first they said it was on recall now they say it isn’t so Mercedes Benz of Huntington does not want to repair it.

NHTSA ID

11640643

Incident

Nov 29, 2024

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 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached diagnostic guide.