Mercedes-Benz C-Class Complaints (2015)

452 consumer complaints on file.

#11532242July 14, 2023
ENGINE
I have 65000 miles on my car. It is 2015 Mercedes C300. My Engine light came on. Found out that Crankcase Vent Valve needed to be replaced. Cost me 1200 dollars. It appears that lot of Mercedes C series cars have the same problem. I feel that Mercedes should pay for it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11531495July 10, 2023
POWER TRAIN
My car is the 2015 Mercedes- benz (MB) c 300 4MATIC. The Check engine light is on and off for some months as initially MB dealer said that it's likely due to gas cap defects so we replaced the gas cap. After that, the engine light is still on and off. MB dealer now said $1,760 to replace crankcase vent value and $2870.55 to repair the front differential leaking/reseal. It will cost me a total of $ 4630.55 +tax to repair. The car has only 70,000 miles and kept good maintenance frequently. Right now my car is not safe to drive it so why this car is broke down so quickly. That is not acceptable to us.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11529922July 1, 2023
ENGINE
Engine check light code: P052E Crankcase Ventilator / oil separator. Huge problem could cause the engine to stall while driving. Could lead to an accident if you are trying to merge on the highway and the engine stalls out.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11529358June 28, 2023
SUSPENSION, ENGINE, FORWARD COLLISION AVOIDANCE: WARNINGS
Mercedes 2015 C300 crank case ventilation hose has a defect and it is well-known to the manufacturer. This causes recurring engine and exhaust problems for a large number of car owners, and it should be part of a recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11528604June 23, 2023
VISIBILITY/WIPER
During a drive, I had the sunroof opened and then it suddenly started raining. When I tried to close the sunroof using the button, it wouldn't budge. I had to continue driving on the highway with rain pouring inside the vehicle. When I finally found a place to stop and check the sunroof, I saw that the roof on one side was popped off. After a few minutes of trying to close it, it finally popped back into place on its own. However, now there is a rattling sound coming from the sunroof when driving, and the car is no longer quiet. I can hear outside noise as if a window is cracked opened. Every time the sunroof opens and close there’s a slight popping sound on that side and looks like it is still out of place.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11528389June 22, 2023
ENGINE, UNKNOWN OR OTHER
My 2015 Mercedes c300 only has 39k miles and suddenly the engine light on, when I check, the dealer it shows that I need Positive Crankcase ventilation valve replace. it cost $2300. This is basically a brand new car and needing this repair every 30k is a joke please issue a recall and have Mercedes held responsible
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527272June 15, 2023
AIR BAGS
The contact owns a 2015 Mercedes-Benz C300. The contact stated while starting the vehicle, the front driver’s side air bag warning light illuminated. The vehicle was taken to the dealer and the mechanic stated that the vehicle had experienced the failure listed in NHTSA Campaign Number: 16V081000 (Air Bags) however, the VIN was not included. The vehicle was not repaired. The manufacturer was contacted, and a case was filed. The failure mileage was 50,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524033May 26, 2023
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
Mercedes Benz via American Service Center in Arlington, VA regarding the service they performed on my 2015 C300 W4 4Door Sedan AWD the following issues have presented: ISSUE: 03MBZZWARN1 ENGINE LIGHT TECH: 901844 PROBLEM: ENGINE HARNESS, ENGINE CONTROL MODULE, CRANKCASE VENT VALVE, AND O2 SENSOR BANK 1 CAUSE: FOUND OIL IN THE ENGINE HARNESS AND ENGINE HARNESS. OIL IS ENTERING THREW [SIC] THE CRANK CASE VENT VALVE. RECOMMEND REPLACING. Approximate miles at the time of this issue: 63,141. Cost of Repair: $8309.58 Yes, the vehicle is available for inspection. Safety concerns: The vehicle is not able to pass an emissions test with the engine light engaged. Per America Service Center in Arlington, VA, which is the only service center that has serviced the vehicle during my ownership, they commented and documented that oil is entering through a vent valve. My additional concerns are: If an odorless fume is passing into the passenger cabin and the vehicle can not pass state emissions these are immediate concerns. The service center advices that I may continue to drive the vehicle. However, I am concerned should the oil fully empty without warning the vehicle may fail while in use on a dangerous roadway due to cause and effect of additional unknown maintenance related operational co-dependent mechanical components.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520828May 7, 2023
ENGINE
Crank case breather assembly needed replacement at 31,200 miles. Service mech. Advised the leaking area (oil) could not be repaired since Mercedes does not sell replacement parts and entire assembly needs to be replaced. March advised Mercedes is aware of issue and has redesigned the entire assembly. Cost for part was $400+ and labor to install was $1000. This issue is common as seen on internet and should warrant a recall refund to customers.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520609May 5, 2023
ENGINE
Positive Crankcase Valve faulty causing car to buck during moderate acceleration especially when accelerating onto an interstate on an on ramp.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519273April 27, 2023
STEERING
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 65 MPH, the power steering assist warning light illuminated, and the steering wheel became firm. The contact was able to pull over safely on the side of the road. The vehicle was towed to the dealer and the dealer stated that steering column was experiencing an electric failure, and that the rack and pinon needed to be replaced, and the steering module needed to be reprogramed. The vehicle was not repaired. The manufacturer was contacted, and the manufacturer stated that the VIN was not under any recall. No further assistance was provided. The failure mileage was 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11518471April 22, 2023
UNKNOWN OR OTHER, STRUCTURE
FRONT STATIONERY PANEL FAIL OFF WHOLE DRIVING I SEE IT IS IN RECALL BUT DO NOT SEE MY VIN HOW CAN I GET THIS FIXED PER RECALL
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11516408April 10, 2023
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 45 MPH, the roof carriage started shuddering. The contact veered to the side of the road. Upon inspecting the vehicle, the contact noticed that the roof panel had loosened. The contact stated continued driving and the roof panel fractured and partially separated from the vehicle. The vehicle was taken to an auto glass repair shop, where the roof panel was replaced; however, the failure reoccurred. The vehicle was taken back to the same auto glass repair center. The contact then became aware of NHTSA Campaign Number: 21V197000 (Structure) that he related to the failure. The dealer and the manufacturer were notified of the failure and informed the contact that the VIN was not included in the recall. The vehicle was not repaired. The failure mileage was approximately 85,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11514880March 31, 2023
ENGINE
My vehicle is a 2015 C300 AWD. One day I was driving on the highway and noticed white smoke coming out of the exhaust. The check engine light came on shortly after as I pulled over. Being that I was less than a mile from my house, I decided to go park the vehicle. I noticed that it was losing power and had problems going above 45mph. Since my vehicle had 99k miles. I took it to my indy mechanic that has worked on the vehicle since it has been out of warranty. When he diagnosed the vehicle, 48 codes came up. He suggested we change the spark plugs and coils, which we did. Didn't fix the problem. Then he suggested we change fuel injector 1, which we did. That didn't solve the problem. I decided to take it to the local Mercedes dealership where they did another diagnostic test. And like many others here, cracked piston/cylinder 1 dead. I'm looking at $18,000 in repairs. I told them no thank you. The car is now sitting in my garage. I really hope Mercedes makes this right with its customers. There is no reason why this many people should be having this exact same problem. Vehicle Symptoms: White smoke out of exhaust Check engine light on Cylinder 1 Misfire Burning Oil Causing loss of power Radio randomly shuts off & went into Anti Theft Mode
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11514640March 30, 2023
ENGINE, FUEL/PROPULSION SYSTEM
2015 C300 Crankcase Ventilation Valve Replacement P052E71 NEED TO BE REPLACED, ENGINE LIGHT COMES ON. ONLY HAVE 37,000 MILES MANY REPORTS OF THIS ISSUE
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11514007March 27, 2023
POWER TRAIN
PVC valve shouldn’t fail and each time it does it is around 2k dollars.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11514065March 27, 2023
ENGINE
my car is a 2015 C300 class Mercedes-Benz, as I was driving, the car suddenly and without warning began to vibrate and shake violently and immediately lost power. Fortunately I was off the freeway, a serious accident could have resulted. I took it to the the local MB dealership and they told me that the car failed a compression test in the #1 cylinder and that the engine would have to be replaced at almost $17000. Of course, this was beyond warranty, Mercedes know it’s a defective product, they refused to act responsibly. This cracked piston which is a design flaw by Mercedes needs to be recalled, a lot of people are reporting the same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11513842March 26, 2023
ENGINE
The problem is actually a manufacturing defect in the wrist pins. The defective parts are in engines made before April 20, 2015 which is mine. If left unrepaired, it causes premature wear in the cylinder walls. The issue on my car been confirmed by mb dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11513338March 23, 2023
ENGINE
obd2 scanner reported Error Code P052E which seems a very common issues on Mercedes C class 2015 or newer and there is no recall issued by Mercedes Benz yet which points out to possible problems with "PCV Regulator Valve components. There are 100s of post in the forum related to same issue
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11513522March 23, 2023
ENGINE, FUEL/PROPULSION SYSTEM
My son's car was blowing white smoke out of the exhaust and had a sweet burning smell and the check engine light came on. The crankcase vent valve is needing to be replaced on this 2015 C300 Mercedes Benz and many owners of this same type of car (different year) are posting about it. Owners of these types of cars are saying that replacement is happening more than once! That it's a common defect of these cars. My son has less than 100,000 miles (61,000 if that) and this shouldn't be happening. And, it's time someone does something to protect the consumer. Mercedes-Benz dealers are taking advantage of consumers and charging ridiculous prices to replace this part, but the part shouldn't be breaking. It's a safety factor in that it can affect driving, there's risk of blowing valves/valve cap and engines, including loss of the vehicle and nowadays no one can afford to buy a new car or even a used one! Consumers buy what they think is a reliable vehicle but Mercedes isn't taking care of their customers. Mercedes-Benz should be forced to do a recall and replace these faulty parts. Read other complaints here: https://www.benzworld.org/threads/2015-c300-crankcase-ventilation-valve-replacement-p052e71.3047538/page-2
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to Mercedes-Benz C-Class