Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2014 Mercedes-Benz CLA250 owners, lightly cleaned up (personal details are redacted by NHTSA).
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 contact owns a 2014 Mercedes-Benz CLA-Class. The contact stated that upon approaching the vehicle, she discovered that the driver's side window was shattered. The sunroof was brown, and there was a hole in the dashboard showing the engine. The contact stated that the vehicle had caught fire; however, the fire extinguished on its own. There were no prior warning lights illuminated. There were no reported injuries, air bag deployment, or police report filed. The fire department responded and was present at the scene, and disconnected several wires. The local dealer was not contacted. The manufacturer was not notified of the failure. The failure mileage was unknown.
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). …
My engine light is and as per mechanics I have seen it is a very common problem with mercedes benz around crankcase ventilation actuator. As per mechanics its faulty part and mercedes have changed it for new models but there is no recall on the older models. Cost to repair the part is around $3500. Issue with the part if causing environment problem as mileages is reduced and more fuel burning. This eventually impacts the engine and car.
P052e common crankcase ventilator issue mercedez extended warranty for later models for this same consistent issue in all the cars excluding 2014 starting at 2015 vehicles making us pay over $2000 for a fix supposed to be free being that it's all mercedes even the year before Should be a recall along with the hundreds of thousands of people with same issue online same car.
As I was driving, the car is on D but it slips into N and I cannot shift to any other gear accept P. This happens randomly and happened three times. I noticed the GLA250 also had this issue. I have to turn off my engine and restart my car to get it running again normally.
catalytic converter Got clogged up and car would loose power and not get enough air into engine and catalytic converter right next to the turbo under the heat shield would turn glowing red causing turbo to leak it's fluids
Apparently the TPS (Throttle Position Sensor) which is built into the gas pedal on this 2014 MB CLA250 only lasts so long before it becomes defective under highway conditions and causes the vehicle to go into LIMP MODE. When full acceleration is necessary, the unit will work for perhaps a few months or less, and then continue to fail worse and more frequently with each attempt at full acceleration. At highway speeds, this is an essential feature in a 4-cylinder vehicle such as this one and without the necessary acceleration capability, can expose the driver to serious risk of collision with other on-coming vehicles traveling at highway speeds. …
On this day, I was nearly killed in my 2014 Mercedes CLA250 4matic that stalled on a highway in new york city. The car has roughly 40,300 miles on the odometer. I was driving on the brooklyn queens expressway at 4:00 am. The car's motor stalled and the car came to a stop in the left lane. There were no shoulders. I attempted to get the car restarted but all I got were flashing dashboard lights. I attempted to put up a warning triangle to the rear of the car, but the traffic was moving too quickly for me to safely do that. I sat in my car and buckled my seat belt. I called 911 to announce my emergency and I contacted my car's insurer for a tow truck (they provide such a service). Within moments, a Toyota with tlc plates smashed into my car sending me into the barrier. The rear of the car was broken and deformed. …
Purchase my 2014 cla 250 in January 2014 for my daughter. In May my daughter call and said the car just stopped running while she was driving it. Didn't really think anything of it because she was a new driver. About 3 weeks later she said it did the same thing. Again in October 2014 I was driving the car. Driving about 40mph and the car just stop moving. A message of inoperative came the screen. I was able to pull to the side of the road. The steering was very hard to turn and nothing would work except for the brakes. If you turn the car off and start it again the car will start working again. Put the car into the shop. They said it was a computer update. Mercedes dealer updated the system. As they were driving the car back to me the same thing happened. So they took it back to the dealer kept if a week and said they fixed the problem. Three months later exactly 1 year having the car. …
Engine complaints in other CLA250 years
Frequently asked questions
How common are engine problems on the 2014 Mercedes-Benz CLA250?
NHTSA has 68 complaints about the engine & cooling of the 2014 Mercedes-Benz CLA250, 38% of the model year's 179 complaints.
Is there a recall for 2014 Mercedes-Benz CLA250 engine problems?
No. NHTSA lists no engine & cooling recall for the 2014 Mercedes-Benz CLA250, though it has 6 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2014 Mercedes-Benz CLA250 engine problems start?
Half of the complaints with a recorded mileage happened before about 14,000 miles, and 76% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 1 injury to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.