Mercedes-Benz C-Class Complaints (2015)

452 consumer complaints on file.

#11446555January 6, 2022
ENGINE
Without any warring or indication my engine would start making bad noise then light comes on to check engine as the motor fails and car shuts off. This is while driving and has happened two times now. Both times I find it’s due to spark plug failure and pieces of the plug go throughout the engine and severely damage. First time this happened at 82,000 miles and was covered by warranty. Now this has happened again on the new engine with 81000 miles on it. I seen many forums on this issue. This time it’s not under warranty and it’s $18000 to fix. Mercedes Benz w205 engine seems to be notorious for spark plug failure in cylinder 1 as well as piston cracking. The first time this happened was October 12th 2019 and the warranty work was done at fletcher Jones Mercedes Benz of Newport Beach
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11444474December 20, 2021
FUEL SYSTEM, GASOLINE
The contact owns a 2015 Mercedes-Benz C300. The contact stated that a strong fuel odor could be smelled from both inside and outside the vehicle. The vehicle had to be serviced for the failure; however, upon inspection, the contact believed that the source of the odor was from the engine fuel lines. The dealer was notified of the failure and informed him that there were no recalls on the vehicle. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 102,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11444326December 19, 2021
FUEL/PROPULSION SYSTEM
Constant fuel smell coming from the engine, you can see gas coming out of the high pressure line. When I park in the garage the whole house smells like gas. Even while driving gas smell coming through the vents constantly
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11444200December 17, 2021
ENGINE
The contact owns a 2015 Mercedes-Benz C300. The contact stated that while driving approximately 50-60 MPH, the #1 piston cracked. The contact stated that while his daughter was driving, the vehicle was shaking and smoking. The check engine warning light illuminated. The vehicle was towed to an independent mechanic and the contact was informed that the #1 piston was cracked, engine cooler, P0301 cylinder #1, P219 solenoid failure. The vehicle was taken to another independent mechanic and the engine was replaced. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no further assistance was provided. The failure mileage was approximately 105,102.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11442155November 30, 2021
UNKNOWN OR OTHER
on 7/17/21 the piece of the top of the car right from the from window leading to sunroof came undone and flew off while on highway. vehicle was repaired a month later at body shop. this was out of pocket due to not wanting to claim on my insurance due to deductible. This piece flew off at a high velocity with no warning and couldve caused a accident. There was no indication of any issues no lights no warnings signs. There was a loud noise like a brick or large object falling on top which then I heard a lot of air. Recently again in October 5 I was driving on the highway and debris hit my sun roof, my window was shaking and I went to the body shop. in the brief drive there some 10 miles the same plastic part repaired was lifted and coming off. on this occasion I used my Insurance. On 03/2/22, another event in which the plastic portion between front window and rooftop flew off while driving 60mph on the highway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11438782October 31, 2021
STRUCTURE:BODY
Panoramic sunroof off centered causing glass to tilt on one side above vehicle. Note, a recall for the same on models 2015 c300 for vehicles with prior service but same issues/ problems for my vehicle that has not been serviced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11436743October 14, 2021
ENGINE
Check engine light came on. Code P052E. Had this code in 2018 and the pcv valve and line were changed. Currently has the same issue 3 years later. This is a very common problem with mercedes that have this engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11436009October 8, 2021
AIR BAGS
The contact owns a 2015 Mercedes Benz C250. The contact had initially received a recall notice for NHTSA Campaign Number: 19V010000 (AIRBAGS). The contact took the vehicle to the local dealer and had the recall serviced. The contact stated that while driving at 35 MPH, another vehicle made a left turn and hit his vehicle in the middle of an intersection. The contact stated that the air bags did not deploy upon impact. The authorities were called to the scene and a police report was filed. No medical attention was rendered at the scene of the accident. The vehicle was towed to an independent mechanic where it remained in their possession. The contact sought medical attention later that day at a local hospital where he was treated for a strain to his left neck and left leg. The dealer nor the manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 60,000.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11435095October 1, 2021
FUEL/PROPULSION SYSTEM
Hi so i woke up this morning and my started my car as usual then noticed the smell of gas all around the car Inside and out. I got worried turned off the car and started sniffing around to see if i can find where the leak was and found out the high pressure fuel pump was leaking i looked up info on this part and it is very common on these car for that part to fail. Im very upset that there is no recall yet when the dealership told me that they do 2-3 of those jobs a week (HIGH PRESSURE FUEL PUMP REPAIRS) and still no recalls on this,what is it going to take to get one?, my car has to blow up to get your guys attention?? Oh wait other Mercedes c300 cars in the united states already caught on fire please fix this saftey hazard i want to feel safe and not worry about catching on fire. ITS BEEN 6 years AND STILL HAVE NO RECALLS FOR THIS CAR ???
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11434943September 30, 2021
ENGINE
The engine stalled at idle numerous times when at a stop light or stop sign. This was dangerous as the other cars could have ran into my car in anticipation that I should be moving with traffic. The car was taken to the Mercedes Marin dealer service center and diagnostic was done indicating a cracked piston in cylinder one was causing loss of compression and could also cause engine failure at speed if not taken care of. Check engine light DID NOT come on. During research on repairs for this issue, it became apparent that Mercedes Benz is aware of this issue in many of its engines of this model and year, but did nothing to remedy the situation or the underlying manufacturing defect that causes the cracked piston. In addition, Mercedes is unwilling to cover the cost of repair or replacement (car has only. 49,000 miles, but is out of warranty due to age).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11433168September 16, 2021
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 50 MPH, the contact heard an abnormal flapping sound coming from the opened panoramic moon roof. The contact reached up into the open moon roof and discovered that the adhesive bonding on the front panel had started to deteriorate. The contact took the vehicle to the local dealer and was confirmed the failure however, the contact was informed that the dealer was not equipped to perform the repair. The contact was referred to Mercedes-Benz of Wilkes-Barre (150 Motorworld Dr, Wilkes-Barre, PA 18702) where the mechanic removed the bonded panel and installed a new front panel which the contact paid for out of pocket. The first dealer then notified the contact of NHTSA Campaign Number: 21V197000 (Structure) and instructed him to call the dealer where the vehicle was repaired. The second dealer was notified of the failure and informed him to call the manufacturer for potential reimbursement. The manufacturer was notified of the failure and informed him that the vehicle was not included in the recall. The vehicle was repaired. The failure mileage was approximately 68,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11431700September 4, 2021
STRUCTURE:BODY
Panoramic glaaa sunroof mounting bracket made of cheap thin plastic that it breaks easily allowing the panoramic glass roof to fly off the car if driven while open.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11427645August 3, 2021
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact’s wife stated while driving 70 mph, the roof panel separated and detached from the vehicle. The vehicle was diagnosed but not repaired. Upon investigation, the contact associated the failure with NHTSA campaign number: 21V197000 (Structure) however, the part to do the recall repair was not yet available. The manufacturer was informed of the failure but offered no assistance. The failure mileage was approximately 57,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11424925July 15, 2021
STRUCTURE:BODY
Panoramic Sunroof has had several problems previously. While driving 65 mph the plastic roof piece between the windshield and sunroof suddenly and unexpectedly dislodged and flew off the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11425042July 15, 2021
SEAT BELTS
I would like to bring to your attention a potentially dangerous design flaw in my 2015 Mercedes C300. That design flaw resulted in me having to cut the seat belt off a passenger, my wife, in order to free her from the car. I will also explain in detail the admittedly rare circumstances that led to this potentially dangerous incident. In May 2021, my wife underwent outpatient surgery of her left shoulder. After the surgery a nurse brought my wife to the curb in front of the hospital, where I had pulled up my car. The nurse and I assisted my wife with her transfer from the wheel chair into the passenger seat. My wife was wearing a sling supported by a spacing pillow on her left arm. The nurse then proceeded to fasten the seat belt around my wife. Since the nurse’s procedure is of importance to this incident, I will explain it in detail. After my wife was seated, the nurse unwound the passenger seat belt entirely and inserted the belt tongue into the buckle so that the lap part of the seat belt went properly around my wife’s lap. To protect the fresh surgical site from external forces, the nurse then placed the part of the seat belt that is normally worn across the chest BEHIND my wife’s back. Had the seat belt been placed properly across my wife’s chest, it would have been forced to pass over her left arm, which was tied to her body by the sling and bandages. It was thus not possible to wear the chest part of the seat belt properly over the chest but under the left arm. Lastly, the nurse allowed the fully extended seat belt to wind up onto the pretensioner. Upon arrival at home I wanted to take the seat belt off my wife. To this end I opened the passenger door, and gently pulled on the seat belt in order to slacken it enough to get the seat belt off her. However, I could not get any slack. Per instructions in the user manual, I opened the belt buckle but the belt was tightly wound around my wife's body. Ultimately, I had to cut the belt with scissors.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11424353July 12, 2021
UNKNOWN OR OTHER
The panoramic sunroof of the C300 is held in plastic hooks that break, even with normal use. So, that leaves the panoramic roof to fly off the vehicle on the highway. I have not opened my roof in three years because I am afraid it might not hold up. Looking at the MB owners' forum, it seems to be a pretty common issue that these plastic hooks break, and then the panoramic roof either doesn't close all the way, stay up to let the air come underneath it to introduce the risk of it flying away, or become really flappy when driving with open roof.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11423964July 8, 2021
UNKNOWN OR OTHER
On July the 8th I was driver on interstate highway 65south in Birmingham Alabama in my 2015 Mercedes c 300 when there was a loud thump which startled me and almost caused an accident what happened is the roof panel between the windshield and sunroof flew off it caused damage to my vehicle and almost an accident now when I contacted Mercedes they say that it is a recall out for this problem but they do not have a time as to when this can be fixed this will be a problem because now I am not able to drive my vehicle because there is a gape between the windshield and the roof where water and anything else will get into the vehicle this is terrible now I am without a car for who knows how long.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11423487July 5, 2021
ENGINE
In March of 2020 I was driving home from work. I stopped at a red light. When it turned green, I proceeded to step on the gas. My car started making noises and shaking as I drove. My check engine light came on. I was able to pull over without incident. My vehicle has under 48k miles on it! I had it towed to a Firestone facility by my house. They replaced spark plugs and ignition coil 1 and 2. They said it was still severely misfiring. Cylinder 1 must have internal damage and should be towed to the dealer. They gave me a spark plug they removed that had significant damage to the top part. They said something must have impacted it with significant force. I then had the vehicle towed to a Mercedes Benz Dealership. They said they inspected with a scope and found piston material missing, can see ring exposed and have damage to cylinder wall. Will need to replace engine, turbo charger, cat converter intake manifold to repair. They wanted $18k to repair. I did some research and found out that the 2015 Mercedes C class was the first year they switched from 6 cylinder to 4 cylinder turbo charge engine. These models have had a significant amount of engine problems and failures, the manufacturer is aware of. Many of these occurred in cylinder 1 along with wrist pins issues and others. I found my situation wasn't unique. I then filed a complaint with The BBB in Georgia. MBUSA offered me $3k towards the repair or purchase of a new vehicle. I declined the offer. I only wanted my vehicle repaired. I wasn't alone in this situation. These issues are easily found online. My vehicle has since been sitting in my driveway for almost a year and a half. I've been making my monthly car and insurance payments on a vehicle I can't drive. I recently went to the Mercedes dealership and they will give me $5k for the vehicle towards a trade, leaving me with $15k negative equity towards the purchase of a vehicle. Mercedes should stand behind their products and do the right thing
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11423106July 1, 2021
UNKNOWN OR OTHER
Driving down the interstate and half of the stationary roof panel dislodged. Luckily no accidents occurred due to the malfunction. The other half is still loosely attached and I am worried it could cause an accident if it detaches . I have emailed and called headquarters as well as my local dealership and no one has the ability to fix the problem and cannot confirm if I choose to pay out of pocket, that I will be reimbursed. There is a recall and it’s #21V197. At this point I want some sort of solution so I can ensure the safety of myself and those driving around me.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11422534June 28, 2021
ENGINE
I was in middle line on I-5 SB San Diego doing 40-60MPH when my car suddenly started to shudder, shake and smoke came from the exhaust. The car lost power and the check-engine light came on right away. I was told that Cylinder 3 lost pressure, that the engine wall was damaged and that possibly the piston and wrist pin are cracked. My car has only 66K miles and the Mercedes Benz dealership is telling me that I need a new engine that will cost $19,000. After doing some research I have found out that I wasn't the only one with this issue. I have listed an example here: "HERE IS A MAJOR ISSUE WITH THE 2015 M274 MERCEDES ENGINE REGARDING THE WRIST PINS. MERCEDES HAS ISSUED NUMEROUS INTERNAL SERVICE BULLETINS ABOUT THE ISSUE. THE ENGINES WERE MANUFACTURED WITH WRIST PINS WITH TOO MUCH TOLERANCE THAT SLAP AGAINST THE PISTON WHEN OPERATING THAT COULD LEAD TO PREMATURE ENGINE FAILURES. THERE ARE HUNDREDS OF COMPLAINTS ON ONLINE FORUMS OF PREMATURE ENGINE FAILURES (PRE 100K MILES)." MBUSA requested from me proof that the car was serviced on time and with the correct parts. Once I was able to prove everything they told me that they were sorry but I still need to pay for everything. They did offer a "10% good-will discount". I wish they told me when I was buying a car that after every 6th oil change I will need a new engine. PLEASE MAKE MERCEDES MAKE THIS RIGHT AND FIX THE AFFECTED CARS THE RIGHT WAY.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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