Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11546025September 22, 2023
STRUCTURE:BODY
The vehicles panoramic sunroof does not close fully. There is a recall for certain Mercedes-Benz 2015 - 2020 C300 vehicles, my car is a 2017 C300, but for some reason my vehicle is not part of the recall. The recall number is 21V197000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546064September 22, 2023
ENGINE, ELECTRICAL SYSTEM
Had an oil change at a Mercedes dealership after driving for a couple hours. Check engine was on for a code P052E, being crankcase ventilation system. Had the car diagnosed, cost to repair 1,600 dollars. Went through with repair, the code pop up again (P052E). Having to bring vehicle constantly to Mercedes dealerships.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545779September 21, 2023
FUEL/PROPULSION SYSTEM, STEERING, FORWARD COLLISION AVOIDANCE: WARNINGS
- What component or system failed or malfunctioned, and is it available for inspection upon request? NHTSA Recall ID: 23V445, Fuel Pump Delivery Module How was your safety or the safety of others put at risk? Vehicle at risk to lose drive power, increasing the chance of crashing while operating. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No. Mercedes dealership states they will not repair recalls on the weekends only M-F. I work at the hospital M-F 0800-1700. The dealership will not make any accommodations in assisting me with my schedule to get car fixed. They refuse to let me make apt on Sat/Sundays and they will not have car towed to and from Mercedes dealership to my work. They have suggested for me to leave work around 1400 to drop car off and pick up a loaner for repairs M-F. This is not feasible.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545888September 21, 2023
ENGINE
P052E - PCV Regulator Valve Performance: Actuator Stuck P06DA - Engine Oil Pressure Control Circuit/Open no sub type information My understanding is these are common issues and Mercedes and anyone who works on them know it is a common issue for all lines. I also have a broken sunroof that seems to be common on all lines. There are some recalls out for the sunroof but not for the C-Class C300, although all of the videos I have found match the same issues that were recalled on other models. The dealer confirmed these are known issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545905September 21, 2023
ENGINE, UNKNOWN OR OTHER
After getting gas my check engine came on steady. Stayed on until cleared. After getting gas a 2nd time check engine light came on again, stayed on, but went out. Then after getting gas a 3rd time, check engine light came on again. Checked by a local Mercedes shop, code showed intake line oil separator bad. Owned this car for 7 years, never had an issue like this. 50,516 miles currently. Quote for repair is high, over $1000 dollars. All episodes of check engine light have occurred in a 4 week time frame.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545542September 20, 2023
STEERING
Mercedes has a convenience easy enter/exit feature that lifts the steering and slides the driver's seat back for easy exit and restores the seat and steering when the driver sits down and places the key in the ignition. The safety issue is the steering often gets locked in the up position and doesn't lower, making it unsafe to drive the car. This is happened 5 times since I bought the car. I had to drive home with the steering wheel locked above the dashboard. The car has been towed to the dealership 4 times under warranty and now I have to get it towed myself. There are approximately 54000 miles on the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545313September 19, 2023
ENGINE, FUEL/PROPULSION SYSTEM
Engine light on smells gas constantly tried to change oil that did not work light came back on
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545073September 17, 2023
ENGINE, FUEL/PROPULSION SYSTEM
P052E PCV value problem Google search results show this is a very common problem, and despite being a component of the vehicle emissions system, Mercedes is refusing to repair under the emissions warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11545079September 17, 2023
ENGINE
Piston one issue. I bought this car from an auction and according to the record on the car the previous owner had problem with piston one and low compression in that piston. After performing some research it looks like Mercedes’ Benz c300 m274 is riddles with this issue. It’s all over the internet and I don’t know why Mercedes is not taking responsibity for this. This car has less than 70000 miles and the engine is locked from the cylinder. Thank you
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544819September 15, 2023
ENGINE
Engine light came on, checked with diagnostic machine shows a crank shaft issue. I have maintained the car with regular checks and maintenance. This has to be a defective part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544524September 14, 2023
SERVICE BRAKES
i have been noticing a hissing sound coming from the brake paddle for almost 3 weeks. upon some online research i found out it could be a brake booster and there was a recall for the same car brand due to issues with brake booster in past but not included year 2016. vehicle not inspected yet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544614September 14, 2023
EXTERIOR LIGHTING
The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving 35 MPH, he smelled a rubber burning odor. A message indicating that the turn signal was inoperable was displayed. The contact stated that he pulled to the side of the road and inspected the vehicle. The contact noticed that there was smoke coming from the rear passenger's side taillight. The contact stated that he opened the taillight panel and noticed that the interior and the bolt had melted. The contact was able to continue driving. The contact related the failure to Mercedes-Benz Campaign Number: 2014050001; however, the dealer informed the contact that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the campaign. The failure mileage was approximately 30,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544080September 12, 2023
ENGINE
The Crankcase Ventilator Actuator has malfunctioned, resulting in the Check Engine light showing up. The MB C300 4matic 2017 vehicle is at 40,200 miles as of [XXX]. Lot of other MB owners have reported same issues. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544088September 12, 2023
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 6,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543843September 11, 2023
ENGINE
2015 MB C300 Check engine light came on, appointment scheduled to check issue before it went to the mechanic had a safety issue when accelerating to turn in a seven lane busy intersection the car lost acceleration and missed, running rough for a few seconds then recovered in time for me to get out of the way of the 45-50 mph oncoming traffic. Issue is P052E positive crank case ventilation valve which is going to cost $2200 to fix. Car has just over 60k miles on it and this is a known issue for YEARS on multiple MB turbocharged 4cl. I could have been t-boned if the acceleration hadn’t recovered. Does someone have to get killed before MB recalls the vehicles? 60k miles is not a lot of mileage for a car 8 years old that has had all its scheduled maintenance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543139September 7, 2023
FUEL/PROPULSION SYSTEM
On 8/3/2023 we could smell a strong gasoline smell inside and outside our 2011 Mercedes C300. We towed the car to a Mercedes specialty repair shop for inspection. The found that the passenger side fuel pump cover (which is a large cylinder assembly actually) was leaking due to cracked plastic. Gas vapors could be detected outside the car, in the trunk, and in the car as the gas tank is right under the back seat. Our mechanic said he had just fixed another Mercedes with the exact same problem. Apparently this is a well known defect and I understand that Mercedes has an extended warranty for later models. We believe the extended warranty should be extended to our 2011 C300 which has only 55,000 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543206September 7, 2023
TIRES:SIDEWALL
The contact owns a 2023 Mercedes-Benz C300 equipped with Bridgestone RFT Tires, Tire Line: Turanza 100, Tire Size: 225/45/R18, DOT Number: VRJ7V4Y. The contact stated that while driving at approximately 40 MPH, the driver's side tire exploded. The contact stated that a "0 PSI driver side front tire" warning light was illuminated. The contact stated that he observed that the driver's side tire had a portion blown out on the sidewall of the tire. The vehicle was towed to a local dealer where it was diagnosed that the blowout had been due to external sources and not tire structural integrity. The manufacturer was notified of the failure. The contact stated that the vehicle was no longer equipped with a spare tire, and the contact was informed by the dealer that any type of spare tire for the vehicle was unavailable for purchase. The contact had been told by the manufacturer that the vehicle had been equipped with "run flat tires" and there was no need for a spare tire. The approximate vehicle and tire failure mileage was 2,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543316September 7, 2023
ENGINE
CRANKCASE VENTILATION- code: P052E came up and I had just bought from the dealership with 87k miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543013September 6, 2023
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
According to the dealership, if the car is not started every 3 days, it will shut itself down. The car was towed 6 times, I'm a business woman, my coworkers, friends drives Mercedes Benz, and no one have heard of any such issues. Any cheaper cars, after 2 weeks at the airport, the car starts. Something is wrong with the car, something is draining the car battery if not started every 3/ 4 days. They are taking advantage to the fact, that I'm a female and older. They need to replace the car, fix, or junk their car. Someone needs to take responsibility for the repair of the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542815September 6, 2023
ENGINE, ELECTRICAL SYSTEM
ESP CONTROLLER NON FUNCTIONAL
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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