Owners have filed 15 complaints
about the 2014 Mercedes Benz C350 with NHTSA between 2017 and 2026.
The largest single group is the airbags.
Across this model's run it ranks 2 of 5 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 30
Against the median year of the Mercedes Benz C350. 50 means typical for this
model; 100 means roughly double.
Severity — 69
13.3% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 85
50% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2014 compares with every other Mercedes Benz C350
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2014 Mercedes Benz C350
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Airbags
853.3%
Median failure at 60,000 miles
Body & Structure
213.3%
Median failure at 60,000 miles
Acceleration & Cruise Control
16.7%
1 crashes, 0 fires
Brakes
16.7%
Steering
16.7%
Median failure at 22,000 miles
Electrical System
16.7%
Median failure at 22,000 miles
Transmission & Drivetrain
16.7%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Nov 2017peak 3Jan 2026
Complaints that involved harm
Reports where the owner recorded a crash, a fire, an injury or a death.
Simi Valley, CACrash1 injured
VEHICLE SPEED CONTROL
2014 MERCEDES BENZ C350. CONSUMER WRITES IN REGARDS TO DEFECTIVE ACCELERATION SYSTEM. *LD THE CONSUMER STATED THE CRUISE CONTROL MALFUNCTIONED CAUSING A 4 CAR COLLISION. THE CONSUMER STATED THE INFORMATION IN THE POLICE REPORT WAS FALSE AND THAT THE CRASH WAS INADEQUATELY INVESTIGATED.
NHTSA complaint #11196319 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
at 60,000 milesCrowley, TX
STRUCTURE:BODY:DOOR:HANDLE:INTERIOR
The contact owns a 2014 Mercedes-Benz C350. The contact stated that while the vehicle was parked, the front driver’s side interior door latch detached. The contact had to reach through the front driver’s side window to open the front driver's side door using the exterior door handle. No warning lights were illuminated. The vehicle remained at the residence. A dealer was contacted and informed the contact that there was an unknown recall related to the failure; however, the VIN was not included in the recall. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.
NHTSA complaint #11709762 — an unverified report by a vehicle owner.
at 64,000 milesBethesda, MD
AIR BAGS
The contact owns a 2014 Mercedes-Benz C350. The contact stated that while attempting to start the vehicle, the air bag and the driver’s side air bag malfunction service required warning light illuminated. A dealer was contacted. The vehicle was taken to a dealer where it was determined that the air bags needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and declined to cover the cost of the repair. The approximate failure mileage was 64,000.
NHTSA complaint #11683642 — an unverified report by a vehicle owner.
Little Rock, AR
STRUCTURE:BODY
1. the component that failed was the front stationary sunroof panel, and what failed on it was the adhesive which leads to it leaking water, and the potential of even falling off while driving 2. it could lead to falling off on the highway which could lead to damages to it or other vehicles around it 3. Unknown 4. Yes it was inspected at a nearby dealer ship in which they stated that the glue was failing on that part of the car and would need to be replaced 5. No warnings for this issue, i was only able to notice it because when it rains now if not under cover that part of the car will allow water to leak into the vehicles inside There was a recall campain in which the number is 2021070010 and it included 2014-2020 mercedes C class which my vehicle matches said description but when i have tried to get this issue resolved but my vehicles vin number was not apart of this recall as it shows across multiple sources
NHTSA complaint #11591531 — an unverified report by a vehicle owner.
Inlet Beach, FL
POWER TRAIN
I was driving my vehicle when the transmission started shifting erratically. The shifts were not smooth but hard and the car was shuddering. Yes the vehicle is available for inspection. My safety and the safety of others were at risk due to the erratic behavior of the vehicle and how it affected my ability to focus on driving safely. Yes my vehicle has been inspected by the manufacturer and the problem has been reproduced by my local Mercedes Benz dealer. There were no warning lamps or messages prior to the failure. After a few weeks of driving I saw a “low coolant” warning appear, this turned out to indicate that the radiator had leaked coolant into the transmission which damaged the internal transmission components and torque converter.
NHTSA complaint #11546837 — an unverified report by a vehicle owner.
Branchburg, NJ
SERVICE BRAKES
2014 Mercedes-Benz E-350 4matic. Brake fluid and Brake warning lights illuminated. The vehicle was taken to the local dealer where the service technician advised the brake lines to the rear tries were rusted and had to be replaced . The vehicle was repaired at a estimated cost of $2,900. The approximate failure mileage was 100,000. we were advised that the car is a hazard to drive until repaired. We have requested the dealer to turnover the failed parts for our inspection and use
NHTSA complaint #11514058 — an unverified report by a vehicle owner.
Daytona Beach, FL
AIR BAGS
I WAS NOTIFIED IN FEBRUARY 2019 THAT CAR NEEDED THE AIR BAGS REPLACED! HERE A YEAR AND A HALF LATER THEY STILL DON'T HAVE THE PARTS! I THINK THEY ARE LIEING TO ME!
NHTSA complaint #11338875 — an unverified report by a vehicle owner.
at 60,000 milesOcean Springs, MS
AIR BAGS
I HAVE AN OPEN RECALL FOR MY AIRBAGS SINCE JANUARY OF 2019. I AM SHIPPING MY VEHICLE THROUGH THE MILITARY IN 2 MONTHS BUT AM FILLING THE PAPERWORK OUT NOW AND ONE OF THE CRITERIA IS THAT THE CAR CANNOT HAVE ANY OPEN RECALLS. WHEN I DID RESEARCH ON THE RECALL IT IS STILL OPEN AND UNABLE TO BE FIXED DUE TO "REMEDY NOT AVAILABLE YET."
NHTSA complaint #11320014 — an unverified report by a vehicle owner.
Akron, OH
AIR BAGS
TL* TAKATA RECALL. THE CONTACT OWNS A 2014 MERCEDES-BENZ C350. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 19V010000 (AIR BAGS). THE PARTS FOR THE RECALL REMEDY WERE NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME TO REPAIR THE VEHICLE. MERCEDES-BENZ OF AKRON (1361 E MARKET ST, AKRON, OH 44305, (330) 733-7511) WAS CONTACTED AND CONFIRMED THAT PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
NHTSA complaint #11256702 — an unverified report by a vehicle owner.
Simi Valley, CACrash1 injured
VEHICLE SPEED CONTROL
2014 MERCEDES BENZ C350. CONSUMER WRITES IN REGARDS TO DEFECTIVE ACCELERATION SYSTEM. *LD THE CONSUMER STATED THE CRUISE CONTROL MALFUNCTIONED CAUSING A 4 CAR COLLISION. THE CONSUMER STATED THE INFORMATION IN THE POLICE REPORT WAS FALSE AND THAT THE CRASH WAS INADEQUATELY INVESTIGATED.
NHTSA complaint #11196319 — an unverified report by a vehicle owner.
Cordova, TN
AIR BAGS
FRONT RIGHT MALFUNCTION
NHTSA complaint #11196010 — an unverified report by a vehicle owner.
Waynesboro, GA
AIR BAGS
TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C350. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS) EXCEEDED A REASONABLE AMOUNT OF TIME FOR REPAIR. THE CONTACT RECEIVED THE RECALL NOTIFICATION ON DECEMBER 17, 2017. MERCEDES-BENZ OF AUGUSTA (3061 WASHINGTON ROAD, AUGUSTA, GA 30907, 707-860-11111) STATED THAT PARTS WERE UNAVAILABLE FOR THE REPAIR. THE MANUFACTURER WAS NOT CONTACTED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
NHTSA complaint #11078394 — an unverified report by a vehicle owner.
at 22,000 milesMurrysville, PA
AIR BAGS
STEERING WHEEL SPRING GROUNDING PROBLEM CAN ACCIDENTALLY DEPLOY AIRBAG. RECALLED IN OCT 2017 BUT I'M TOLD PARTS WILL NOT BE AVAILABLE UNTIL MAY 2018. THIS IS AN UNREASONABLY LONG TIME. I WENT TO TRADE-IN THIS CAR TO PURCHASE A NEW ONE AND WAS TOLD THAT NO DEALER CAN SELL A CAR WITH A PENDING SAFETY RECALL EXCEPT "AS IS" THROUGH AN AUTO AUCTION, WHICH LOWERS THE VALUE OF MY CAR BY OVER $2,000 VERSUS A NORMAL DEALER TRADE. HOW DO I RECOVER THIS LOSS WITHOUT SUING MERCEDES? ARE THERE ANY GOVERNMENT REMEDIES OTHER THAN PRIVATE LAWSUIT?
NHTSA complaint #11056561 — an unverified report by a vehicle owner.
at 22,000 milesMurrysville, PA
STEERING
STEERING WHEEL SPRING GROUNDING PROBLEM CAN ACCIDENTALLY DEPLOY AIRBAG. RECALLED IN OCT 2017 BUT I'M TOLD PARTS WILL NOT BE AVAILABLE UNTIL MAY 2018. THIS IS AN UNREASONABLY LONG TIME. I WENT TO TRADE-IN THIS CAR TO PURCHASE A NEW ONE AND WAS TOLD THAT NO DEALER CAN SELL A CAR WITH A PENDING SAFETY RECALL EXCEPT "AS IS" THROUGH AN AUTO AUCTION, WHICH LOWERS THE VALUE OF MY CAR BY OVER $2,000 VERSUS A NORMAL DEALER TRADE. HOW DO I RECOVER THIS LOSS WITHOUT SUING MERCEDES? ARE THERE ANY GOVERNMENT REMEDIES OTHER THAN PRIVATE LAWSUIT?
NHTSA complaint #11056561 — an unverified report by a vehicle owner.
at 22,000 milesMurrysville, PA
ELECTRICAL SYSTEM
STEERING WHEEL SPRING GROUNDING PROBLEM CAN ACCIDENTALLY DEPLOY AIRBAG. RECALLED IN OCT 2017 BUT I'M TOLD PARTS WILL NOT BE AVAILABLE UNTIL MAY 2018. THIS IS AN UNREASONABLY LONG TIME. I WENT TO TRADE-IN THIS CAR TO PURCHASE A NEW ONE AND WAS TOLD THAT NO DEALER CAN SELL A CAR WITH A PENDING SAFETY RECALL EXCEPT "AS IS" THROUGH AN AUTO AUCTION, WHICH LOWERS THE VALUE OF MY CAR BY OVER $2,000 VERSUS A NORMAL DEALER TRADE. HOW DO I RECOVER THIS LOSS WITHOUT SUING MERCEDES? ARE THERE ANY GOVERNMENT REMEDIES OTHER THAN PRIVATE LAWSUIT?
NHTSA complaint #11056561 — an unverified report by a vehicle owner.
Columbia, MD
AIR BAGS
TAKATA RECALL: MY MERCEDES DEALER CANNOT REPAIR OR REPLACE THE AIR BAG, CAUSING ME TO CONTINUE TO DRIVE AN UNSAFE VEHICLE AND RISK PERSONAL INJURY OR DEATH.
NHTSA complaint #11044289 — an unverified report by a vehicle owner.