*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
UNKNOWN- The check engine light came on and was taken for a diagnostic test and it returned a P052E code. This indicates a fault in the Positive Crankcase Ventilation Regulator Valve performance. This is a known issue with Mercedes Benz as there has been a recall for all the models except the CLA.
Oct 1, 2025Unknown or other
I was driving to work on Thursday, September 11th. Suddenly, I heard a loud noise like an explosion. Upon checking, I saw that my sunroof had exploded, shattering glass everywhere. The loud noise startled me, causing me to almost have an accident. I managed to pull over, check my vehicle, and drive it back home. I've contacted my insurance company and documented the damage with photos.
Sep 11, 2025Air bagsCrash1 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;…
Jul 24, 2023 · 80,000 milesEngine
Check Engine Light - Code P052E71 - Positive Crankcase Ventilation Valve Performance. The component failure can lead to increased exhaust gas emission, oil leaks, and internal engine damage resulting in unsafe operation. Yes, the problem has been confirmed by an independent certified service center. This specific vehicle has not been inspected by the manufacturer, but this specific problem has been identified in other similar Mercedes-Benz years, make, and models. MBUSA LLC is only willing to apply the EMISSION EXTENDED WARRANTY to certain models within a certain model year, even though the design and engine components are nearly identical if not the same. My vehicle is the same model year…
Jul 17, 2025Suspension
Mercedes subframes that prematurely rust or deteriorate. Mercedes has extended warranty for the mentioned parts on some models. But clearly it is not enough because more models have the same issues. This is a serious safety issues and Mercedes should have taken more responsibility.
Jan 31, 2025Power train
In November 2024, while at a stop, the car shut off. A few weeks later, while driving the car over speed tables/humps, the car shifted from drive into neutral. No warning or error lights appeared on the dashboard. It just showed that the car was now in neutral. I was able to shift back into drive and continue. Fortunately, I was in a residential neighborhood, going about 10 miles per hour and had only one car behind me. This happened again in December, with the same scenario and on the same road, so I took the car to the dealer. They did a diagnostic and was not able to duplicate the problem, but said there were some error codes and it could possibly be the starter, auxiliary battery or…
Feb 10, 2025Engine
The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that the vehicle was taken to a local dealer and the vehicle starting very rather slowly. The vehicle was diagnosed however, no cause for the failure was found. The contact stated that the vehicle operated normally; however, the following day while driving approximately 50 MPH, the vehicle started to lose automotive power. The contact pulled over to the side of the highway until the vehicle came to a complete stop. The contact attempted to restart the vehicle; however, the vehicle failed to start. The vehicle was towed to the residence. The vehicle was inspected by two independent mechanics however, the contact was informed…
Oct 4, 2024 · 124,000 milesVisibility › Sun/moon roof assembly
The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that after the vehicle was washed at the Car Wash, the contact opened the sunroof; however, moments later while attempting to close the sunroof, the sunroof failed to close properly. The local dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 69,080.
Oct 28, 2024 · 69,080 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.