2013 Mercedes-Benz C 300 Problems

I had just gotten off the highway it was a rainy day and pulled into my driveway when airbag deployed on its own. I am lucky to be alive. I purchased this vehicle about 2 yrs or so ago and ran carfax that showed recall was fixed by manufacturer. I contacted Mercedes corporate office and it’s been almost two weeks with me calling and emailing w no call backs or any resolution. I don’t have a car and could have been seriously injured. Please help.

The contact owns a 2013 Mercedes-Benz C300. The contact stated that the fuel tank was leaking after refueling. The fuel had leaked out to half tank. The Fire Department was called, but no assistance was provided. The contact stated that there was a puddle of fuel in the driveway. Additionally, the passenger’s air bag warning light was illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the sensor in the module needed to be replaced. The vehicle was repaired. Additionally, the dealer confirmed that the leak was coming from the filler tube entering the fuel tank. The dealer recommended replacing the fuel tank. The vehicle was not repaired. The manufacturer was contacted and confirmed that there were no recalls on the VIN. The failure mileage was approximately 90,000.

Recently my Mercedes has been pulling and swaying to the side while breaking even at low speeds.Yesterday I got my 2 front tires replaced and asked them to take a look at what could be causing my rear end to pull.When I returned to pick up my car they informed me my rear subframe was completely decayed/rusted through and not safe to continue driving.

On several instances of breaking, my 2013 Mercedes Benz C300 pulls hard to the right and becomes very unstable. I assumed it was a brake problem by the way the car drove. I took it to my mechanic, who immediately identified the rear subframe had rusted so much that a control arm had broken loose from the subframe. The rear subframe acts as a foundation for the rear suspension and holds the backend together. Fortunately I was able to get this diagnosed prior to a serious accident. The car gets very unstable, especially at higher speeds, when braking. There are no warning lights that will catch this. This problem absolutely places both passengers and other cars on the road at risk of a collision when braking, especially on the highway at higher speeds. I am going to contact a local Mercedes Benz dealer to evaluate replacement of the damaged parts to ensure the car is safe to drive following repair. Based on the links below, it sounds like a known issue at Mercedes Benz. I was never notified of any issues or from prior service visits, or via mail notice from the manufacturer. My mechanic was shocked, to say the least. Hoping MB will take care of this dangerous problem without hassle. See: [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The interior door handle of the driver's side door snapped, which does not allow the driver to open the door at all. In the event of a crash, fire, or emergency, the door can only be opened from the exterior. This is a widespread issue with this model of car, which Mercedes-Benz is very aware of. There are hundreds of videos and online discussions of this common saferty issue that Mercedes refuses to make right. This is a risk for the safety of all drivers of these vehicles. The car has been inspected and confirmed by a MB dealer. There were no warning indications before or after this happened. Mercedes Benz wants $1200 to fix this obvious defect.

On several instances of breaking, my 2013 Mercedes Benz C300 pulls hard to the right and becomes very unstable. I assumed it was a brake problem by the way the car drove. I took it to my mechanic, who immediately identified the rear subframe had rusted so much that a control arm had broken loose from the subframe. The rear subframe acts as a foundation for the rear suspension and holds the backend together. Fortunately I was able to get this diagnosed prior to a serious accident. The car gets very unstable, especially at higher speeds, when braking. There are no warning lights that will catch this. This problem absolutely places both passengers and other cars on the road at risk of a collision when braking, especially on the highway at higher speeds. I am going to contact a local Mercedes Benz dealer to evaluate replacement of the damaged parts to ensure the car is safe to drive following repair. Based on the links below, it sounds like a known issue at Mercedes Benz. I was never notified of any issues or from prior service visits, or via mail notice from the manufacturer. My mechanic was shocked, to say the least. Hoping MB will take care of this dangerous problem without hassle. See: [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am filing this complaint regarding a serious and recurring steering system defect involving my Mercedes-Benz vehicle and Recall Campaign No. 2017120022 (steering column defect). Mercedes-Benz corporate representatives provided conflicting information regarding whether the recall repair was completed in 2018. One representative stated it was performed; another stated no record exists. I was never notified that a recall repair had been completed. This inconsistency raises immediate concerns regarding recall documentation integrity and owner notification compliance. The identical steering column system has now failed again, resulting in a complete steering column lock and vehicle immobilization. The repair estimate exceeds $2,500. A total steering lock is a critical safety failure with clear risk implications. If the recall repair was completed, recurrence of the exact same safety-critical component failure within only a few years strongly indicates that the original recall remedy was either improperly performed, defective in itself, or fundamentally inadequate to eliminate the defect. Steering column assemblies are not routine wear items. Mercedes-trained master technicians have confirmed that such failures are rare over a vehicle’s lifetime and highly unusual shortly after replacement. Federal safety recall law requires manufacturers to fully and permanently remedy safety defects at no cost to the consumer. A failed recall remedy that results in repeat failure of the same component shifts the burden improperly onto the owner and undermines the purpose of the recall system. I respectfully request that NHTSA formally investigate whether Recall 2017120022 has resulted in recurring steering column failures following recall repairs, evaluate the sufficiency of the remedy, review Mercedes-Benz USA’s recall tracking and notification procedures, and require reimbursement if the defect represents a failed recall correction.This matter shows a serious vehicle safety concern.

I purchased the vehicle in 2015, and a few months ago I started having issues with the steering wheel, as well as an error message with the airbag. More recently, I am experiencing issues with my ignition switch, and after doing some research I’m seeing that many people who drive the mage and model of my vehicle are experiencing issues with their ignition switch suddenly going out. I’ve been quoted 2k to repair the issues, but I feel the Mercedes should be responsible for taking care of what seems to be a faughty ignition switch with this particular model. There was no warning, no indication that there was a problem, one day my car just wouldn’t start. I need to report this to make sure buyers are aware with issues with the C300 model for all vehicles that are a 2013 and under.

The contact owns a 2013 Mercedes-Benz C300. The contact stated that while attempting to start the vehicle, the vehicle failed to respond as intended. No warning light was illuminated. A dealer was contacted. The vehicle was taken to the dealer where it was diagnosed and determined that engine oil had traveled through the wiring harness causing the ECU to fail. The vehicle was not repaired. The manufacturer was notified of the failure and offered to cover a portion of the repair cost. The approximate failure mileage was 160,000.

The contact owns a 2013 Mercedes-Benz C300. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The contact stated that after several attempts, the vehicle started. The security alert warning light was illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the anti-theft module had failed and needed to be replaced. The vehicle had not been repaired, and the failure persisted. The manufacturer was not informed of the failure. The failure mileage was unknown.

On several instances of breaking, my 2013 Mercedes Benz C300 pulls hard to the right and becomes very unstable. I assumed it was a brake problem by the way the car drove. I took it to my mechanic, who immediately identified the rear subframe had rusted so much that a control arm had broken loose from the subframe. The rear subframe acts as a foundation for the rear suspension and holds the backend together. Fortunately I was able to get this diagnosed prior to a serious accident. The car gets very unstable, especially at higher speeds, when braking. There are no warning lights that will catch this. This problem absolutely places both passengers and other cars on the road at risk of a collision when braking, especially on the highway at higher speeds. I am going to contact a local Mercedes Benz dealer to evaluate replacement of the damaged parts to ensure the car is safe to drive following repair. Based on the links below, it sounds like a known issue at Mercedes Benz. I was never notified of any issues or from prior service visits, or via mail notice from the manufacturer. My mechanic was shocked, to say the least. Hoping MB will take care of this dangerous problem without hassle. See: [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The Brake lines in this car rot very early in life span. This is a severe issue as no one would know unless car is brought in for repair. There is already a extended warranty for subframe rotting for my c300 and several other models and years . Both of these should be repaired due to poor manufacturing not just the subframe. Both of these issues even independently put everyone on the road at risk of potential failure. Car has been brought in for repair and has been pointed out to me both by independent party and Mercedes Benz dealership in my area. There are NO WARNINGS also multiple claims for both rusting and rotting

The contact owns a 2013 Mercedes-Benz C300. The contact stated that while attempting to start the vehicle, the vehicle failed to respond as intended. No warning light was illuminated. A dealer was contacted. The vehicle was taken to the dealer where it was diagnosed and determined that engine oil had traveled through the wiring harness causing the ECU to fail. The vehicle was not repaired. The manufacturer was notified of the failure and offered to cover a portion of the repair cost. The approximate failure mileage was 160,000.

The contact owns a 2013 Mercedes-Benz C300. The contact stated that upon starting the vehicle, there was an abnormal rattling sound coming from the engine compartment. There were no warning lights illuminated. The vehicle was taken to a local dealer where it was diagnosed, and the contact was informed that the timing chain tensioners were faulty and needed to be replaced. The vehicle was not repaired. The contact had experienced the failure with the timing chain tensioner on three separate occasions. The manufacturer was notified of the failure. The approximate failure mileage was 60,000.

The contact owns a 2013 Mercedes-Benz C300. The contact stated while pulling into a parking space and depressing the brake pedal, the vehicle accelerated unintendedly. There was no warning light illuminated. The contact stated that she depressed the brake pedal but the vehicle failed to respond. The contact stated that while the vehicle was approaching a building ahead, she veered to the right and hit the front bumper of an occupied vehicle. The vehicle then drove over the sidewalk. The contact stated that while approaching the end of the sidewalk, she veered to the right and the vehicle stopped after approximately 200 feet. The air bags did not deploy. There was no injury sustained. A police report was filed. The vehicle was towed to an auto collision repair shop. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 23,032.

THERE HAS BEEN NO REPAIRS FOR THIS RECALL THAT IS A LIFE THREATENING SAFETY HAZARD . I HAVE CONTACTED THE MANUFACTURE AND THEY HAVE STATED THEY DO NOT HAVE THE PARTS TO FIX THIS. I HAVE MY FAMILY THAT RIDES IN THIS CAR EVERYDAY. THIS NEEDS TO BE FIXED OR BUY BACK THE CAR FROM ME.

I needed new tires and the tire dealer reported that my subframe is rotted bilaterally. He suggested I do not invest in tires until it is replaced and to notify Mercedes as there may be a recall. This defect caused instability of the frame that secures the tires. The safety risk should go without saying. Any rotted structure that supports the car and/or secures the tires is an obvious safety risk. After reading the multiple complaints posted under “structure” for this make and model, it appears that yes, this problem has been reproduced and confirmed by other owners and mechanics. I am presently picking up my car from the tire dealer and driving it directly to the Mercedes dealership…so they will be aware and able to inspect it. There were no warnings or alerts that my subframe rotted. I do not believe this is something that could be measured with a sensor to trigger an alert electronically.

I noticed that my car was pulling heavy to the left when I stop and strange noise in the rear of the car, after taking the car to the mechanic he told me that the car rear subframe on my 2013 Mercedes Benz c300 was rotted, the control arm bracket completely broke off on the left side and the right side is also cracked. it appears that this is a common issue in areas of heavy road salt usage during winter months, the dealer told me that the car has a rotted rear subframe problem and the subframe could break out in months.

LEFT TAIL LIGHTS BURNING OUT DUE TO OVERHEATED WIRES

TL* THE CONTACT OWNS A 2013 MERCEDES-BENZ C300. WHILE DRIVING AT AN UNKNOWN SPEED, THE PASSENGER SIDE TAIL LIGHT ILLUMINATED INTERMITTENTLY. IN ADDITION, THE CHECK PASSENGER SIDE TAIL LAMP, BRAKE LAMP, CHECK REAR PASSENGER SIDE TURN SIGNAL, AND CHECK REAR REVERSE SIGNAL WARNING INDICATORS ILLUMINATED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE WIRING HARNESS WAS OVERHEATING AND NEEDED TO BE REPAIRED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT CALLED MERCEDES-BENZ OF BURLINGTON (80 CAMBRIDGE ST, BURLINGTON, MA 01803, (781) 229-1600) AND WAS INFORMED THAT THERE WAS NO RECALL. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 160,000.

The contact owns a 2013 Mercedes-Benz C300. The contact stated that the fuel tank was leaking after refueling. The fuel had leaked out to half tank. The Fire Department was called, but no assistance was provided. The contact stated that there was a puddle of fuel in the driveway. Additionally, the passenger’s air bag warning light was illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the sensor in the module needed to be replaced. The vehicle was repaired. Additionally, the dealer confirmed that the leak was coming from the filler tube entering the fuel tank. The dealer recommended replacing the fuel tank. The vehicle was not repaired. The manufacturer was contacted and confirmed that there were no recalls on the VIN. The failure mileage was approximately 90,000.

Fuel tank is leaking at connection between fill tube and tank. Multiple recalls have been issued apparently for similar problems with cars of other years. With less than 1/2 tank, the fuel leak is not as pronounced. With the tank full, the tank drips fuel. Fire department in Riverside was called and confirmed issue. Upon bringing vehicle to Clearwater Mercedes and other mechanics, the problem was confirmed. Dealership says that Mercedes Benz denies that the problem is theirs to resolve. Dealership fixed other issue that was not producing symptoms but stated that the cost to resolve was $5000.00 (about the value of the car at this point).

The ESP®, or Electronic Stability Control system can put the car into limp mode unexpectedly. Say you are driving on route 66 going 50 mph. The ESP system can turn off if a wheel speed sensor or yaw sensor is on the way out. This causes the car to suddenly dramatically brake and limit speed to 5 mph on the highway. Risk of high speed rear end collision and mortality to the driver.

The subframe has rotted from insufficient protection . This car is unsafe to drive , many US consumers having same problem with this model where the subframe is rusted out. This is a major issue effecting thousands of cars of this model or maybe more

FEDERAL TIRES FELL APART WHILE DRIVING

TL* THE CONTACT OWNS A 2013 MERCEDES BENZ C300 EQUIPPED WITH CONTINENTAL CONTI PRO CONTACT TIRES, SIZE: 225/45R17. THE CONTACT NOTICED THAT ALL OF THE TIRES EXHIBITED BUBBLES ON THE SIDEWALLS. THE DEALER STATED THAT THE TIRES NEEDED TO BE REPLACED. THE TIRES WERE REPLACED MULTIPLE TIMES WITH THE SAME TIRES, BUT THE FAILURE PERSISTED. THE TIRES WERE REPLACED TEN TIMES WITHIN 18 MONTHS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE DOT NUMBER WAS UNKNOWN. THE APPROXIMATE TIRE AND VEHICLE FAILURE MILEAGE WAS 3,000. UPDATED 09/11/15*LJ UPDATED 10/30/2017*CN

The contact owns a 2013 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed during a rainstorm, and rainwater leaked from the sunroof and the front driver’s side window into the cabin of the vehicle. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 125,000.

DRIVING HOME ON NORTHBOUND I-5 IN SEATTLE. VERY LOUD NOISE LIKE A SMALL EXPLOSION. THE FRONT PART OF THE PANORAMIC SUNROOF EXPLODED! THERE WERE NO OVER PASSES OR CARS NEARBY. NO OTHER APPARENT DAMAGE ANYWHERE. OUTSIDE/EXTERIOR SUNROOF LOOKED FINE (SEE PHOTOS). IT WAS RAINING AT THE TIME. THE SUNROOF, ALTHOUGH SHATTERED, DID REMAIN INTACT, HOWEVER STARTED LEAKING. THIS APPEARS TO BE A VERY COMMON PROBLEM (DO ANY TYPE OF INTERNET SEARCH ON PANORAMIC SUNROOF EXPLODING). PLEASE INVESTIGATE. *TR

Vehicle Information: Year: 2013 Make: Mercedes-Benz Model: C300 (4MATIC) Approximate Mileage: 126,026 Component: Latches/Locks/Linkages – Interior Door Handle Summary of Issue: On October 10, 2025, the interior driver-side door handle on my 2013 Mercedes-Benz C300 broke, making it impossible to open the driver’s door from the inside. The handle broke through normal use upon trying to open the car door from the drivers side. The only way to exit the vehicle now is to roll down the window and reach around to use the exterior handle. On October 14, 2025, I spoke to two Mercedes-Benz dealerships in my area. They both confirmed this is a recurring problem on this model but stated there is no recall. One of them physically inspected the vehicle door problem. I believe the actual broken replacement part costs about $50. However, according to these same authorized Mercedes Benz repair shops I spoke to, Mercedes-Benz REQUIRES replacing the entire door panel assembly, which costs between $950 and $1,480 in labor and parts. This is not a reasonable or safe solution for such a critical component. This poses a serious safety hazard. In the event of a fire, collision, electrical failure, or if the windows become inoperable, the driver (myself) could become trapped inside the vehicle, leading to potential injury or death! I strongly urge the NHTSA to investigate this recurring defect, as it directly affects occupant safety and the ability to exit the vehicle in an emergency. Universal Imports, Rochester, NY – Inspected and confirmed recurring problem, no recall, verbal repair estimate $950, and Mercedes‑Benz of Rochester (West Herr Automotive), NY] – Confirmed recurring problem, verbal repair estimate $1480 Requested Action: Please investigate whether this defect warrants a safety recall or mandatory manufacturer repair campaign. The interior door handle failure on Mercedes-Benz C-Class vehicles represents a clear safety risk to occupants.

The contact owns a 2013 Mercedes-Benz C300. The contact stated that the front driver’s side seat belt would not retract and was unable to lock and secure the driver. Also, the rear driver’s side seat belt ceased and was unable to pull out and lock to secure the driver’s side rear seat passenger. The rear passenger’s side seat belt failed to retract and would not secure the passenger side rear seat passenger. The cause of the failure was not yet determined. The local dealer and manufacturer were not notified of the failure. The approximate failure mileage was 110,000.