What 157 owners told NHTSA about the 2015 Mercedes-benz CLA

Good Afternoon, the status of my vehicle is simply UNKNOWN. I purchased my vehicle on the 26th last year of January. That same day I drove it back home my car was jerking. So I went back the following day to see if I could get into another vehicle because this one was malfunctioning they didn’t want to do anything for me. I tried so many different options to get out of this car I had a few scares driving this car the week of ownership. About sis times my car cut off completely during traffic and I have some recorded videos. Theirs a leakage somewhere I can fill up my gas tank to full and drive maybe two blocks away from my house and the gas meter is say that I have half a tank. Now my car is overheating, it’s not cranking it just tells me on the dashboard that 4MATIC is unavailable.

NHTSA ODI 11610274

The contact owns a 2015 Mercedes-Benz GLA250. The contact stated that the sunroof failed to close completely as needed. Upon inspection, the contact discovered that a plastic part of the roof panel had detached. The vehicle was taken to an independent mechanic, who replaced the right and left roof guides, motor glass, and headliners. The contact related the failure to NHTSA Campaign Number: 23V854000 (Structure); however, the VIN was not included in the recall. The manufacturer was made aware of the failure. The failure mileage was approximately 120,000.

NHTSA ODI 11609498

there is a known issue with the mercedes benz GLA 250 rear differential. it is defective and need to be replaced many times during the life of the vehicle. i have not had an accident that i can relate to this defect but i feel it need to be reported and investigated by your office. the cost of the repair is over $6000. you can read more about this issue in this forum [XXX] i started reporting the issue before the warranty expired, the dealer was never able to find the problem, after the warranty expires they "discovered" what the issue is, the rear differential need to be replaced. of course they deny any wrongdoing but this is a well documented manufacturing defect that should be addressed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11608450

The panoramic sunroof on my 2015 Mercedes Benz CLA 250 4Matic spontaneously exploded while I was driving. It was a clear sunny day with no weather and there were no vehicles in front of me that could have kicked up a rock. It sounded like a gunshot, and I scared enough that I veered into another lane. Thankfully I did not hit another vehicle. I had very small superficial cuts on my arm and back. The dealership does not acknowledge any manufacturing defect on the sunroof. After some research I have found there is an open class action lawsuit against Mercedes Benz for this exact issue. The was no warning prior to the issue. There was nothing to inspect as it was just a pile of broken class laying in my car.

NHTSA ODI 11603203

Rear differential has failed/malfunctioned. The vehicle is available upon request. It is a road safety issue as it will stall/ hesitate when accelerating and has a jerking effect. It has been confirmed by an independent service center. It had not been inspected by anyone, other than an independent service center mechanic. There were no warning lamps, messages or other symptoms of the problem prior to the failure.

NHTSA ODI 11594191

Engine light come on at about 43000 miles. Code scanner is p052e. Upon research is a common problem with Mercedes and approximately $2000 dealer repair.

NHTSA ODI 11593273

The contact owns a 2015 Mercedes-Benz GLA250. While the contact’s daughter was driving approximately 35 MPH, the vehicle lost automotive power and stalled. The vehicle was eventually restarted and driven to the local dealer who diagnosed that the transmission valve body and conductor plate had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 47,749.

NHTSA ODI 11592418

Error code P052E, relates to Crankcase Ventilation System, that requires replacement. My vehicle is under 55,000 miles and the part should last the full life of the engine. This is faulty part that the dealership requires over $4,000 to fix.

NHTSA ODI 11589537

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), 5 U.S.C. 552(B)(6)

NHTSA ODI 11589101

My 2015 Mercedes Benz GLA check engine light came on for error P052E Positive Crankcase ventilation assembly. This is a $2,000 dollar repair because you need to buy the whole assembly and you can’t just buy the valve like other cars. This part has a recall on other models but not the GLA. For example the metrics uses the same part and is covered by a recall but not the GLA. We need to included in this recall. This design flaw renders my 2015 useless and virtually has no value. Please compel Mercedes to recall this defective part and design flaw that requires 6-8 hours of labor for a simple part that is easily accessible on all other cars.

NHTSA ODI 11588169

The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that the sunroof panel was not working properly and failed to close. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure and referred the contact the NHTSA Hotline for assistance. The failure mileage was 32,610.

NHTSA ODI 11587544

My car suddenly shifts to Neutral when stopped at the stoplight/while driving causing a safety issue. I had to turn off and turn on every time this happens. I called Mercedes and filed a complaint #06552876

NHTSA ODI 11586224

The head unit for the sound system begins a reset loop when navigating radio station and/or connecting bluetooth device. Seems to be a glitch in the head unit software. This is preventing use of navigation/GPS screen, backup camera, and Bluetooth connection.

NHTSA ODI 11585060

Engine Light Came up & CollIsion Warring Massage Show Up

NHTSA ODI 11583514

The engine light is one and the related code for the engine light is P052E-71. The valve for Crankcase ventilation has a malfunction. There is recall for the code for other Mercedes Benz car model varies from 2015 to 2019. I believe this code on for GLA 250 is the same manufacture malfunction parts and should be recalled for free replacement for safety reason.

NHTSA ODI 11583328

All MB GLA and CLA 2015 cars have a common issue "CRANKCASE VENTILATION VALVE" which should be replaced a few times for the cars. Each service will cost at least $2000.00. Please ask MB to recall their cars and fix this issue.

NHTSA ODI 11576297

The panoramic sunroof will not open on one side rendering the sunroof unusable. this problem is happening often on this Mercedes model. Looks like Mercedes used plastic guide to move the sunroof back and forward and if you take a bump while driving with the sunroof on the tilted position it will break the plastic tracks rendering the sunroof unusable. this is a time-consuming fix because the interior of the car needs to come out to completely remove the sunroof and replace the damage part with the same original part that will break again under the same circumstances.

NHTSA ODI 11574178

The contact owns a 2015 Mercedes-Benz GLA250. The contact stated while driving at an undisclosed speed, the vehicle sputtered, and the check engine warning light illuminated. In addition, the collision assists warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with a failed PVC valve. Additionally, the transmission assist needed service due to overheating. The collision assist warning light was reset. The vehicle was repaired. The contact stated that the failure had reoccurred, and the collision assist, and the check engine warning lights illuminated again. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that the failure occurred four times. The vehicle was repaired twice by the dealer and once by an independent mechanic. The manufacturer was not made aware of the failure. The failure mileage was approximately 44,000.

NHTSA ODI 11570114

When it first started to malfunction, my car would suddenly loose power out of nowhere and pretty much stop wherever. It's done it when I was crossing a busy intersection and it stalled right in the middle of the road causing other cars to have to stop or go around me. It has also stopped while I was driving on the freeway. I didn't even have enough power or momentum to pull off to a safe lane and almost caused an accident and several times while I was driving up a narrow two way road in the mountains. Later down the road my check engine light came on and I got the code p205e, Crankshaft ventilation breather hose is clogged, then my car lost power for good. It has been parked for almost a year now because I can't afford the repair and I am still paying car payments and insurance on it

NHTSA ODI 11567146

I was getting of the highway when i heard a knocking sound. I pulled off the road and had my vehicle towed to my mechanic. According to my mechanic. I need a new motor because of a weld failure on the crankshaft.

NHTSA ODI 11562966

Have seen a lot people I know with Mercedes have a code p052e and it cost over 2000 grand to repair. Should be a resall since a lot have been having same problem with the same code. Went off for now but I’ve seen online a lot saying it had check engine light come on again!

NHTSA ODI 11563146

The contact owns a 2015 Mercedes-Benz GLA250. The contact stated when the vehicle was started, the check engine warning light illuminated, and there were fumes from the exhaust entering the cabin of the vehicle. Additionally, while driving at various speeds, the vehicle stalled. The contact stated that the failure persisted. The vehicle was taken to the dealer to be diagnosed; however, the vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 98,000.

NHTSA ODI 11562014

Panoramic Roof exploded without any outside influences causing this...many on your radar...dangerous...not sure why the NHTSA has not ordered a recall...there have been thousands of these same issues across many manufacturers. Almost caused a crash due to the startle effect of the explosion. MBZ does not make a replacement part for this. Why is that? There's a reason behind this. It's the gov'ts responsibility to keep us safe...Insurance paid for the replacement...MBZ does not make it...there are no aftermarket replacements for this. Dealership has had the car on it's lot for 5 weeks...it's been out of order for 8 weeks.

NHTSA ODI 11556301

Crankcase Vent Value defect

NHTSA ODI 11552626

Positive crankcase ventilation regulator valve preformence I know alot people have same problem

NHTSA ODI 11551496