Mercedes-Benz CLA250 stalling problems

Filed Aug 29, 2026 · Fuel system · TX

Vehicle would unexpectedly stall out while driving at slow speeds or stopped. Car was brought to an independent car shop and it was determined the Fuel pump had started to come apart sending debris into the fuel tank/system causing low fuel pressure. The fuel tank with fuel level sensor and suction jet pump was replaced along with, fuel injectors and other fuel system components. This looks very similar to other Mercedes Fuel system recalls that does not seem to cover the GLA250 but has the same manufacturer parts. the federal safety agency campaign numbers 23V880 and 23V881 represent a massive safety recall issued by Mercedes-Benz USA due to a defective fuel pump The problem: A component inside the fuel pump was made from faulty materials and may fail prematurely. If this happens, the vehicle’s engine may shut off while driving, and the car may lose power.

Filed Nov 17, 2025 · Engine · PA

I own a 2014 Mercedes-Benz CLA 250 with the 2.0L turbocharged 4-cylinder M270 engine. The check-engine light came on and an OBD-II scan showed fault code P052E / P052E71, which indicates that the valve for crankcase ventilation (PCV / crankcase ventilation valve integrated into the valve cover) has a malfunction and the actuator is blocked. The vehicle is available for inspection and, if the repair is performed, the failed part can be retained. This appears to be the same failure that has been documented by other owners and by Mercedes-Benz on the related M274 engine used in other models (same 2.0L turbo engine family and PCV / crankcase ventilation design, but in a longitudinal layout). For those vehicles, Mercedes has issued technical service bulletins and extended emissions-related warranty coverage for the crankcase ventilation / PCV system, but vehicles like my CLA with the M270 engine are excluded even though they show the same DTCs and failure. In my case, the problem has so far shown up as a check-engine light and stored fault codes, without obvious drivability symptoms yet. However, a blocked or failed crankcase ventilation valve can increase crankcase pressure, cause oil leaks, fuel vapor or oil smells, and potential turbocharger or drivability issues, which may create a safety risk if the problem worsens (loss of power or stalling). The problem has been reproduced multiple times with different OBD-II scan tools. I contacted Mercedes-Benz and was told there are no recalls or warranty coverage for this issue on my vehicle.

Filed Jul 24, 2025 · Airbags, Electrical · 80,000 miles · CA · crash · 1 injury

The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that the air bag warning light was illuminated. The contact stated that the vehicle was previously involved in a collision, in which another vehicle crashed into the passenger's side of the vehicle, causing damage to the frame and headlights; however, the air bags failed to deploy. The contact sustained soreness in the neck and back and received medical assistance. A police report was filed, but the contact did not have the police report information available. Additionally, the contact stated that while driving at 65 MPH, the vehicle stalled. The contact pulled to the shoulder of the road. The vehicle was able to restart; however, the failure recurred several times while driving. The contact related the failure to the federal safety agency Campaign Number:Â 15V662000(Engine and Engine Cooling). The contact stated that the vehicle had leaked excessive oil onto the ground. The contact stated that the vehicle had failed to start while pressing the Push to Start button. The vehicle was taken to the dealer, where the contact was informed that she would need to pay a fee for diagnostic testing. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the vehicle. The failure mileage was approximately 80,000.

Filed Jun 16, 2025 · Transmission · NJ

Component or System That Failed or Malfunctioned: The component that failed was the partial-load ventilation valve, which is part of the engine’s crankcase ventilation system. This valve is responsible for regulating airflow and pressure within the crankcase during partial engine loads. A malfunction in this valve can lead to increased engine pressure, oil leaks, and potential damage to engine components. The component is still available for inspection upon request. Safety Risk: The failure of the partial-load ventilation valve put my safety, and that of others, at risk in the following ways: •Engine stalling or reduced power while driving, especially during acceleration, which increases the risk of an accident. •In some cases, oil leakage caused by excess crankcase pressure could lead to engine compartment smoke or a potential fire hazard. •If the engine performance is compromised, it may suddenly lose power on highways or intersections, posing a serious risk. Problem Reproduced or Confirmed: Yes, the issue was confirmed. The technician verified the faulty valve during a diagnostic inspection after I noticed performance issues and warning messages. Inspected by Manufacturer, Dealer, or Others: Yes, the vehicle was inspected Warning Lamps, Messages, or Other Symptoms: Yes, there were warning signs prior to the failure: •Check Engine Light illuminated on the dashboard. •Engine running rough or hesitating, particularly during acceleration.

Filed Jan 27, 2025 · Electrical, Engine · TX

Vehicle Performance Issues - Detailed Timeline [XXX] •First issue occurred: the car wouldn’t start at a store. Engine turned over, failed to start. •After sitting overnight, it would start but stall after 10 minutes of driving. •Parked the car and began using alternative transportation. •Diagnostic tests by three mechanics revealed the following codes: oP0087: Fuel Rail/System Pressure Too Low. oP052E: Crankcase Ventilation (PCV). [XXX] •Picked up the car from Midland Mercedes after repairs. Paid $3,069.16 for crankcase ventilation service. •Mercedes Customer Summary Report had no reference to any fuel-related issues or the P0087 code. •Drove 10 minutes to a gas station; the car wouldn’t start, repeating the same issue of why I brought it in to have repaired. •Returned to the shop; Said a New Code came up and replaced the fuel pump: oCost of part: $670.47 (no labor charged). I refused to pay $2200! [XXX] •Finally after 3 months! I got my car and drove back to San Angelo on half a tank, avoiding stops to prevent starting problems. I now had PTSD! •Filled the tank upon arrival; no issues that day. [XXX] •On the way to work, turned on the heat and noticed: oA strong gas odor inside the car. oThe radio volume control wasn’t working, and the ECO mode indicator wasn’t functioning as usual. [XXX] Filled the gas tank halfway to reduce the gas smell. •1st start up cycle immediately after getting gas, no issue. •2nd start up cycle , the dashboard lights started flickering and all indicator lights came on. Traction control warning along with message to check the owner’s manual. Can not accelerate. Check engine light stays on. •3rd cycle start up, all lights turned off except the check engine light. •4th cycle start up, no check engine light This occurs every time I get fuel. I only get $10 at a time. Noticing the pattern, I coded the car. A new code came up. •P2187: System Too Lean at Idle (Bank 1). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 26, 2024 · Electrical, Engine · 76,850 miles · OK

The contact owns a 2014 Mercedes-Benz CLA250. The contact stated while driving at approximately 70 MPH, the vehicle stalled. The contact stated that when the vehicle stalled, an audible chime sounded, and the air bag warning light illuminated, and a RED triangle symbol flashed on the instrument panel. The contact stated that the instrument cluster went blank, and the vehicle lost power steering assist. Additionally, the brake pedal was very difficult to depress. The contact was able to restart the vehicle after several attempts, and the vehicle returned to normal functionality. The contact stated that the failure reoccurred. The contact drove the vehicle to a dealer who diagnosed the vehicle and determined that the battery needed to be replaced. The vehicle was repaired. The contact stated that the failure reoccurred and the vehicle had not taken back to the dealer. The manufacturer was not informed of the failure. The failure mileage was 76,850.

Filed May 16, 2024 · Engine, Fuel system · GA

I HAVE 2 MECEDES WITH THE SAME ISSUE PER MERCEDES BENZ OF USA INSPECTION CAUSING ENGINE LIGHT TO BE TRIGGERED PER DIAGNOSIS TESTING RAN ON BOTH CARS. 2015 VIN [XXX] GLA 250 4 MATIC 2016 VIN [XXX] CLA 250 MATIC I WAS TOLD BY A MERCEDES SERVICES ADVISOR THAT BOTH CARS HAVE THE SAME ENGINE FOR A 2015GLA AND A 2016 CLA - BOTH Due to both cars stalling in traffic on multiple time when driving I took both to the shop to run further testing to discover both had the same engine light trigger which is the CRANKSHAFT (AKA) OIL SEPERATOR (AKA)INTAKE TUBE DUE TO THIS BOTH CARS HAVE SUFFERED AN ISSUE WHEN TAKING EMMISSION TEST - MERCEDES DIGNOSIS TESTING CODES -P052E71- CRANKSHAFT VENTILATION MALFUNCTION - CAR WILL NOT PASS EMISSION TEST AND THIS PART DEFECTS ALSO CAUSES CAR TO STALL THAT CAN POSSIBLE CAUSE ACCIDENT THIS PART COMPLETE REPAIR COULD COST UP TO $2500-$3000 FOR PARTS AND LABOR PART NUMBER -270-090-07-00 (CRANKSHAFT) THE ENGINE LIGHT ISSUE TRIGGERED BY CRANKSHAFT AND WILL NOT PASS EMMISSION TESTING DUE TO THIS Description of this part below: Crankcase Ventilation is the process of venting or removing blow-by from an engine's crankcase to prevent excessive pressure build-up within the engine. Blow-by gases are mixed with oil mist and other contaminants that can harm an engine's internal components and contaminate the environment. How does the crankshaft ventilation work- When the vehicle is moving, airflow across the open end of the tube creates suction (a "draught" or draft) that pulls gases out of the crankcase. To prevent too much vacuum being created, the blow-by gases are replaced by fresh air using a device called a breather. The breather is often located in the oil cap. the engine misfires, you may have trouble getting your vehicle up to speed. Misfires often happen when your vehicle is under load while accelerating. This can result in slow or sluggish acceleration or a jerking motion while pressing down on the accel INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA),

Filed May 16, 2024 · Engine, Fuel system · GA

I HAVE 2 MECEDES WITH THE SAME ISSUE PER MERCEDES BENZ OF USA INSPECTION CAUSING ENGINE LIGHT TO BE TRIGGERED PER DIAGNOSIS TESTING RAN ON BOTH CARS. 2015 VIN [XXXXX] GLA 250 4 MATIC-P052E71 2016 VIN [XXXXX0 2013 CLA 250 MATIC -P052E71 I WAS TOLD BY A MERCEDES SERVICES ADVISIOR THAT BOTH CARS HAVE THE SAME ENGINE FOR A 2015GLA AND A 2016 CLA - BOTH Due to both cars stalling in traffic on multiple time when driving I took both to the shop to run further testing to discover both had the same engine light trigger which is the CRANKSHAFT (AKA) OIL SEPERATOR (AKA)INTAKE TUBE DUE TO THIS BOTH CARS HAVE SUFFERED AN ISSUE WHEN TAKING EMMISSION TEST - MERCEDES DIGNOSIS TESTING CODES -P052E71 - CRANKSHAFT VENILATION MALFUNCTION - CAR WILL NOT PASS EMMISSION TEST AND THIS PART DEFECTS ALSO CAUSES CAR TO STALL THAT CAN POSSIBLE CAUSE ACCIDENT THIS PART COMPLETE REPAIR COULD COST UP TO $2500-$3000 FOR PARTS AND LABOR PART NUMBER -270-090-07-00 (CRANKSHAFT) THE ENGINE LIGHT ISSUE TRIGGERED BY CRANKSHAFT AND WILL NOT PASS EMMISSION TESTING DUE TO THIS Description of this part below: Crankcase Ventilation is the process of venting or removing blow-by from an engine's crankcase to prevent excessive pressure build-up within the engine. Blow-by gases are mixed with oil mist and other contaminants that can harm an engine's internal components and contaminate the environment. How does the crankshaft ventilation work- When the vehicle is moving, airflow across the open end of the tube creates suction (a "draught" or draft) that pulls gases out of the crankcase. To prevent too much vacuum being created, the blow-by gases are replaced by fresh air using a device called a breather. The breather is often located in the oil cap the engine misfires, you may have trouble getting your vehicle up to speed. Misfires often happen when your vehicle is under load while accelerating. This can result in slow or sluggish acceleration or a jerking motion while pressing down on acc

Filed Jan 9, 2023 · Engine, Fuel system · CO

Approximately several weeks ago, the check engine light illuminated in my vehicle. No issues were present at that time. Shortly after, approximately a week later, the vehicle began to stutter when reversing or driving on surface streets after being on the highway. The vehicle also would stall after the check engine light flashed several times. The vehicle would need to be turned off and turned back on to accelerate correctly and not stall. This has not been inspected by the dealer yet, a service appointment has been made. Mercedes recently recalled other models due to a water intrusion issue, but this model was not included, however it is exhibiting nearly the exact same symptoms.

Filed Dec 23, 2020 · Driver assistance, Engine · 59,000 miles · CA

While driving out of a driveway, a car pulled near my car. At that time, the car was stationary. My wife heard the pre-collision warning. The the car completely shutoff or stalled. Turned off the car completely by turning the key. Then turned the car back on. Lucky there was no accident.