2016 Mercedes C-Class

NHTSA Safety Complaint – 2016 Mercedes-Benz C300 Vehicle: 2016 Mercedes-Benz C300 | Mileage: 74,662 miles What Happened I’m filing this complaint because my 2016 Mercedes-Benz C300 suffered a sudden, complete engine failure at 74,662 miles, and I believe it’s a safety risk that deserves investigation. I’ve owned this car since 2016 and followed every recommended service interval. All available warranties were purchased and maintained. The car showed absolutely no signs of trouble before this happened. Last week before filing, I was driving normally when the check engine light came on without any prior warning — no oil pressure light, no temperature alert, nothing else. Within minutes, the engine shut off completely. The car rolled to a stop and I noticed oil leaking from the front of the engine. It was towed to an authorized Mercedes-Benz dealership, where they confirmed the engine suffered a catastrophic internal failure and needs to be fully replaced. Why This Is a Safety Concern No advance warning. The check engine light appeared only minutes before the engine died. That’s not enough time to safely exit a highway or busy road. A sudden total engine failure at speed affects steering, braking assist, and reaction time — it could easily cause a serious accident. Engine failure at 74,662 miles is not normal. A complete engine failure on a well-maintained luxury vehicle at under 75,000 miles strongly suggests a manufacturing defect or design flaw, possibly affecting other vehicles of the same model year. Oil leak at engine front. The leak observed at failure likely points to a specific component or seal failure. If this is a design weakness, other 2016 C300 owners may be at risk without knowing it. What I’m Requesting 1.Open an investigation into the 2016 Mercedes-Benz C300 for sudden engine failure and inadequate warning systems. 2.Determine whether other owners have reported similar incidents. 3.Evaluate whether a safety recall is warranted.

Reported

May 2026

Incident date

May 2026

Mileage

Not provided

Outcome flags

None reported

Sudden fracture of the propeller shaft universal joint at freeway speeds causing catastrophic damage to the transmission and exhaust system. This matches the failure described in NHTSA Recall 26V216. While driving on Arizona Freeway 202. Extreme clanking noise heard and lost all power in middle of rush hour. Barely able to navigate vehicle safely off the freeway. No warning whatsoever. Had to be towed to Mercedes Benz Gilbert where documentation provided as to failure.

Reported

May 2026

Incident date

Apr 2026

Mileage

Not provided

Outcome flags

None reported

I’ve been driving my car since September when it was purchased I just got it from dealership 4/9/26 spent over $1100 and have been working like regular full time schedule, I wake up today 4/27/26 trying to work and car is stalling. Not sure what’s going on with these mechanics and technicians. I pay to dollar to ensure my family safety on the road here I am stuck without support due to my circumstances. Also, my car just idles the shuts off doesn’t turn mall the way on, magically a check engine light flashed then car just immediately stalled and won’t turn back over all the way.

Reported

Apr 2026

Incident date

Apr 2026

Mileage

Not provided

Outcome flags

None reported

My C300 MBZ, 2016 is experiencing the same symptoms as indicated in a recall, but my vehicle is not included in that recall. Camshaft: GENERAL REPAIR A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion or vice versa. Cams act as a vital component to your automobile's engine. A camshaft is a shaft to which a cam is fastened or of which a cam forms an integral part. Camshafts provide power to the cams which are vital for basic engine operation. The cost of fixing this approximately $10,000 per Mercerdes dealer and estimate from Keyes Mercerdes. The Brief: Mercedes-Benz issued a recall for some model cars tied to a faulty drive shaft.T he problem not only can cause vehicles to lose power but may elevate crash risk, according to the National Traffic Safety Administration. Owners of the affected vehicles can take them to their local dealership to receive free repairs, however per MBZ corporate 2016 C300 not included? Mercedes-Benz is recalling 24,092 cars connected to a drive shaft universal joint that may break, resulting in a sudden loss of drive power.

Reported

Apr 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

None reported

Panoramic sunroof fails to open/ close evenly due to binding issue and plastic track failure. One side binds while the other moves, causing glass to tilt and jam. Risk of dangerous injury including glass shattering, sudden detachment, distraction while driving, and water intrusion affecting airbags/electronics.

Reported

Apr 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

1 injuries

I am reporting a structural failure of the rear subframe (axle carrier) on my 2016 Mercedes-Benz C300 (W205). The component is exhibiting significant internal-to-external corrosion (perforation), specifically at the suspension mounting points. Safety Impact: The vehicle is currently exhibiting unstable handling and a 'skittish' 'swerving' sensation causing the car to 'fishtail' under braking during normal braking and at highway speeds, indicating a compromise in the structural integrity of the rear axle. This poses an immediate risk of a 'loss of directional control' should the suspension components fully detach from the corroded subframe. The Structural Integrity, Loss of Directional Control, Sudden Suspension Failure, and causes extremely dangerous Safety Hazard for my family and other on the road. The corrosion has compromised the mounting points of the rear suspension, creating a risk that the axle will detach while the vehicle is in motion, leading to a catastrophic loss of control. Context: Mercedes-Benz has acknowledged this defect in previous years (2008-2015) via a 20-year extended warranty and in Service Information S135.00-P-0009A. However, they have failed to include the 2016 W205 in the safety remedy despite identical failure modes and documented safety hazards. Currently, as of April 2026, a 2024/2025 federal court ruling [XXX] v. Mercedes-Benz) allowed a class-action lawsuit to proceed specifically covering 2010–2022 models—including the2016 C300 W205—alleging the exact same manufacturing defect. A thorough inspection of the undercarriage of the vehicle shows severe corrosion to the subframe as well as a cracked hub along the drive-train shaft and differential. I have submitted photos along with this Vehicle Complaint From to document the corrosion of the subframe and other defects associated with the devices and systems that transmit power from the engine or propulsion device to the wheels such as the cracks in hubs, shafts, differentials. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Apr 2026

Incident date

Apr 2026

Mileage

Not provided

Outcome flags

None reported

A lot of times when I park even on flat surfaces my parking brake engages and It’s hell being able to leave because I have to turn the car off open the door close door start the again put in drive while my foot is on the brake and pull and push the parking brake button 4 times. Then I’m able to drive. This has been happening more frequently and there is an open recall for the parking brakes calLED ESP RECALL

Reported

Mar 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

2016 Mercedes-Benz C63 S AMG, M177 4.0L twin-turbo V8. This engine is marketed under Mercedes-Benz's "One Man, One Engine" philosophy — hand-assembled by a single master technician. It failed irreparably at 67,323 miles on a properly maintained vehicle owned by a 14-year Mercedes-Benz customer who has purchased six Mercedes-Benz vehicles. All maintenance performed on schedule with genuine OEM Mercedes-Benz parts at Mercedes-certified shops. At approximately 65,000 miles, check engine light illuminated with cylinder 7 misfire. A Mercedes-certified shop found and replaced a burnt spark plug and all 4 ignition coils with OEM parts. Misfire cleared. Three months later at 67,000 miles, shaking and check engine light returned. All 8 spark plugs replaced with OEM parts. Misfires returned within 100 miles — now on cylinders 1, 3, and 7 — accompanied by violent engine shaking and a fuel smell. Vehicle brought to authorized Mercedes-Benz dealer. Full diagnostic performed including borescope inspection. Confirmed: broken spark plug ceramic and unrepairable piston pitting in cylinder 4 and engine damage. Dealer confirmed engine is not repairable and recommends complete engine replacement. All findings documented on dealer repair order. Vehicle remains at the dealer and is available for inspection. Mercedes-Benz has published at least three Technical Service Bulletins on persistent misfires specific to this engine: LI54.21-P-062006 (multiple revisions — ECU ground faults, borescope protocol anticipating internal damage), LI07.61-P-073583 (post-turbo exhaust clamp failures), LI07.61-P-069688 (intake manifold cracks). Mercedes has acknowledged this defect pattern internally and has not issued a recall. Sudden power loss and violent shaking at highway speed is a direct safety hazard. NHTSA investigation warranted.

Reported

Mar 2026

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

Spontaneous explosion of sunroof while car is in motion on the expressway 83 and could have caused an accident while my daughter was driving

Reported

Feb 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving approximately 20 MPH and turning the steering wheel to the right or the left, there was an abnormal clicking sound coming from the rear of the vehicle. There was no warning light illuminated. The contact had taken the vehicle to a local dealer where it was diagnosed and determined that the rear sub frame of the vehicle had severe corrosion and needed to be replaced. The contact was advised by a service technician that there had been a recall for corrosion failures, but the year and the model were not included. The vehicle was not repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 130,000.

Reported

Feb 2026

Incident date

Sep 2025

Mileage

Not provided

Outcome flags

None reported

Strong fuel smell in cabin Can maybe cause a fire

Reported

Feb 2026

Incident date

Jan 2026

Mileage

Not provided

Outcome flags

None reported

fuel lines/ clamps defective causing a fuel leak. vehicle could catch on fire and fumes are extremely strong inside the cabin. issue confirmed by Mercedes dealer, mentioned there is an extended warranty up to 120,000 miles. rejected mine because i was at 120,300 miles. had to pay out of pocket. no warning lights or anything just the really strong smell of fuel and fuel range dropping. this is a very common issue thats known and should be a recall.

Reported

Jan 2026

Incident date

Jan 2026

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated that whenever the fuel tank was full, there was a fuel-burning odor coming from the engine and entered the vehicle through the A/C vents. In addition, when the vehicle was cold, the odor was entering the vehicle through the A/C vents. No warning lights were illuminated. The vehicle was taken to a collision center specializing in foreign vehicles, where it was diagnosed that the fuel rail and injectors had a fuel leak. The vehicle was not repaired. The contact stated that the failure persisted. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 21V961000 (FUEL SYSTEM, GASOLINE). However, the VIN was not included. The contact stated that his mother owned the vehicle in the past and gave the vehicle to the contact two years ago. The contact's mother remembered receiving a recall letter; however, the contact's mother was unsure if the vehicle had been repaired in the past. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was approximately 60,000.

Reported

Jan 2026

Incident date

Oct 2017

Mileage

Not provided

Outcome flags

None reported

I am writing to formally report the premature failure and subsequent replacement of the electronic rack and pinion on my 2016 Mercedes-Benz C300 4Matic sedan. This repair was performed at Sears Imported Autos on 4/19/2024, at a cost of $5,840.14. Invoice number at Sears Imported Autos is XXX. My vehicle, VIN [XXX] , had only 74,427 miles at the time of the failure. The failure of a critical steering component at such a low mileage is highly unusual and, I believe, directly attributable to a latent manufacturing defect. I have recently become aware of a prior recall (NHTSA Campaign Number 18V850000) concerning the electronic power steering rack on these EXACT vehicles. While I acknowledge that my vehicle VIN was not included in the official scope of the previous NHTSA recall, the nature and timing of my component's failure strongly mirror the documented issues of MY power steering failure. Mercedes-Benz USA Customer Care Center just informed me that my VIN does NOT qualify for the recall, but they did NOT say the failure on my car was a different part. The fact that the very same exact part failed so prematurely, a component that is expected to last for the lifetime of the vehicle under normal conditions, points to a systemic quality control issue beyond the scope of the original recall. The recall should be expanded to include my VIN and likely a few others. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Dec 2025

Incident date

Apr 2024

Mileage

Not provided

Outcome flags

None reported

Vehicle developed OBD-II code P052E related to crankcase ventilation/PCV system malfunction. Issue causes improper crankcase pressure, rough idle, oil vapor smells, and check engine light. Independent research shows this is a common failure on 2015–2017 Mercedes C300 models. Repair requires replacement of crankcase vent/PCV assembly. This appears to be a premature emissions system failure.

Reported

Dec 2025

Incident date

Dec 2025

Mileage

Not provided

Outcome flags

None reported

An independent service center diagnosed my car as having a fuel leak stemming from the fuel rail and fuel injectors. This is a fire hazard due to a gas leak. There is a gas smell in the interior cabin that I noticed approximately one month ago. I believe this pertains to NHTSA ID #21V961, and I would like NHTSA to consider including my VIN in this recall.

Reported

Dec 2025

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

My 2016 Mercedes Benz C300 started giving off funky fumes last year in 2024, now the fumes have turned into the smell of gas in 2025. Everytime that I call the dealership on Rockside Rd./ Broadway, located in Bedford Ohio, they give me an excuse as to why it's not their responsibility to correct the issue. What can I do?

Reported

Dec 2025

Incident date

Mar 2024

Mileage

Not provided

Outcome flags

None reported

CHECK ENGINE LIGHT appeared on dash at approximately 72k miles. Had code read and diagnosed by certified mechanic and he had an active code P06DA00(this code signifies an electrical fault, open circuit, or high resistance in the circuit for the oil pump control valve on vehicles with two stage oil pump, which can lead to incorrect oil pressure, which can cause engine damage if not addressed). Vehicle was taken to Harriman Mercedes in New York. They did not acknowledge an active code but wanted to diagnose and repair a stored code for a small evap leak, which was rectified with a new gas cap. After prying about the P06DA00 code, they finally admitted it did have a stored code but to ignore it because it had something to do with domestic and foreign car engine computers issues. How do you ignore an active code with a potentially serious engine issue and told to ignore it. I know for a fact that this is a common problem with these 2.0L engines in these cars for many years.

Reported

Nov 2025

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

IT'S RIDICULOUS I TOOK MY CAR TO THE DEALER (MERCEDES-BENZ OF NOVI, MI) YESTERDAY 2016 MERCEDES C300 4MATIC FOR EXTENDED WARRANTY ON LOW PRESSURE FUEL HOSE AS THE CAR CABIN SMELLS LIKE GAS FUMES TO THE POINT WHERE IT GOT ME DIZZY AND NAUSEOUS AND THREW ME IN BED FOR A DAY. WHEN I ARRIVED THERE I WAS TOLD YEAH THIS IS COMMON ON THESE CARS AND WARRANTY WILL TAKE CARE OF IT. GOT A CALL LATER SAYING IT WILL NOT BE COVERED AS THE 10 YEAR EXTENDED WARRANTY SURPASSED MY CAR AS MY CAR PRODUCTION DATE IS 09/15, I WAS LIKE PLEASE ITS ONLY A COUPLE MONTH AFTER AND ITS A FIRE HAZARDOUS AND HEALTH MATTER THEY WERE LIKE NO, NOW MY CAR IS THERE AND I HAVE TO PAY THEM $850 TO CHANGE AN ISSUE THAT WAS SUPPOSED TO BE TAKEN CARE FROM THE BEGINNING FROM THE MANUFACTURER.

Reported

Nov 2025

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated that there was a gasoline odor inside and outside the vehicle on several occasions, while driving at various speeds and while parked. The contact stated that the vehicle failed to accelerate as needed. The contact stated that there was no warning light illuminated, the fuel consumption increased, with the fuel gauge lowered more quickly. The vehicle was taken to an independent mechanic who saw gasoline pooling near the fuel injector, and the coils were leaking between the fuel injector and the fuel rail, and the fuel rail or possibly the injector seals needed to be replaced. The vehicle was not repaired. The contact believed that the vehicle should be included in a recall. The manufacturer was notified of the failure. The failure mileage was approximately 98,000.

Reported

Nov 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

EPS- Electric Power Steering failed while driving causing hazardous and dangerous conditions. While unable to steer the vehicle it crossed the median into oncoming traffic barely avoiding an accident and endangering my life and life of other drivers and passengers. Unlike on hydraulic systems where in case of defective pump it is still possible to steer the car, this electric steering it was impossible to control even to load the vehicle on the tow truck. Terrible technology or design, most importantly it is NOT SAFE !

Reported

Nov 2025

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the contact smelled a gasoline odor in the interior of the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who determined that the fuel hose downstream of the fuel pump was leaking. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 18V837000 (Fuel System, Gasoline); but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.

Reported

Oct 2025

Incident date

Feb 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while at a stoplight, the energy saver START/STOP feature engaged, but the vehicle stalled and failed to restart. There were no warning lights illuminated. The vehicle was towed to an independent mechanic who determined that the START/STOP function failed to operate as designed. The mechanic informed the contact about NHTSA Campaign Number: 17V114000 (Electrical System, Engine and Engine Cooling). The local dealer was not contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 56,000.

Reported

Jul 2025

Incident date

Jul 2025

Mileage

Not provided

Outcome flags

None reported

Upon purchasing my 2016 C300, I starting experiencing a right pull whenever I press on the brakes. I was very concerned as I use this vehicle to assist with dropping and pick up of my 2 grandchildren. The more I drove the car, the more unsafe especially when I attempt to bring my car to a stop. I took the car to a local mechanic and I was advice to take it to a Mercedes dealership. The mechanic also advice that it was an issue with the REAR SUB FRAME. A week later I took the car in to Mercedes as suggested and a day later I received a call and video from Mercedes that the subframe was broken and that is why I am getting that hard pull whenever I brake. Mercedes also stated that the control arm bracket is barely on and it is causing the vehicle to flex.

Reported

Jul 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

Picked my 5 year old Granddaughter up from camp we had a down tornado warning and we were driving home suddenly the sunroof opens it starts raining on us I hurried and pushed the button to close it when I did it made a loud crunch noise and almost shut but stayed vented and one side is higher than the other. When you try to close it or open it it does move a like but I’m scared it will break on us

Reported

Jun 2025

Incident date

Jun 2025

Mileage

Not provided

Outcome flags

None reported

Positive Crankcase Ventilation Regulator Valve Performance Code P052E indicates a fault in the Positive Crankcase Ventilation Regulator Valve Performance for a predetermined.

Reported

Jun 2025

Incident date

Jun 2025

Mileage

Not provided

Outcome flags

None reported

While driving my 2016 Mercedes-Benz C300 on Route 12 in Utica, NY around 8:10 PM on May 29, 2025, the panoramic sunroof spontaneously exploded while in the tilted vent position. It sounded like a gunshot and sent glass raining into the cabin, causing multiple cuts to my hand, ear, arm, and lower back while I was driving. The shock nearly caused me to lose control of the vehicle. Conditions were clear and dry, around 60°F, and I was driving about 50–55 mph. I have reported the incident to Mercedes-Benz USA (Case #14443457). This is a serious safety hazard, and I am concerned about residual glass in the vehicle’s ventilation system and potential future injuries. I am also concerned about paint and interior damage from the explosion.

Reported

May 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

1 injuries

While driving, my vehicle suddenly shut down in the middle of traffic without any prior warning. I was left stranded in the hot sun, fearing for my safety and praying that I wouldn’t be rear-ended. The incident was not only terrifying but also unacceptable for a vehicle of this caliber. I contact Mercedes customer service. I spoke to a representative name Stephanie. She called the Mercedes dealership service department in Columbus, Ga and received confirmation that my car did shut completely down on me without warning. Stephanie stated she will notate the incident. I told her there should be more than just a notation because this put me in grave danger, not only was my life in jeopardy this is a serious potential threat to others.

Reported

May 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

* Component Failed / Malfunction - Panoramic Sunroof Separation. The front roof panel located between the windshield and the panoramic sunroof has separated from the windshield panel. * Sun roof glass panel is at risk of separating for car and becoming airborne causing injury to driver and others. * Problem has been confirmed by independent service center. * First appeared on approximately April 21, 2025.

Reported

May 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

When I was driving down the road my car got a message on the dash that said power steering malfunction see owners manual. My steering wheel got locked up and tight it was hard to keep control of my car at 60 miles per hour. When I took it to the repair shop, I asked about the repair and if my Vin had a recall and when I looked up the production date of my car it's 2 numbers off the Vin numbers that were recalled for your. same issue with hat happened in 2016 when my car was produced in 2015, it says the same thing. It will cost like 5k to fix the problem due to the fact that its a sensor, and when I looked up the recall it was the same sensor that the recall was on with my Vin only being 2 numbers off I find it odd that my car is not affected by this bc its the same problem of the recall the part of that controls the power steering in the car

Reported

May 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

The panoramic sunroof is locked in an open position and will no longer close.

Reported

Apr 2025

Incident date

Apr 2024

Mileage

Not provided

Outcome flags

None reported

Just purchased this vehicle in Utah, was driving from Utah to Idaho on the interstate at 80mph when all of a sudden my sunroof opened up with high winds and blew right off. Luckily nobody was behind me but I’ve been driving 2 hours without a sunroof due to weak glue/manufacturing defect

Reported

Apr 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

Rusted rear subframe, dime size hole discovered by Mercedes technician on [XXX]. The Mercedes dealer who discovered it was Mercedes Benz of Fredericksburg, VA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Mar 2025

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported

Check Engine Light on, I read the code is P052E, after read some information in internet there is positive crankcase ventilation regulatory valve needs to be replaced. My car is 52000 miles and it seems like happenned to people even with less miles on the cars

Reported

Mar 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

Smells like gas strong

Reported

Mar 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

I own a 2016 Mercedes Benz c300 4matic 44,000 miles and i started my car to pick my girlfriend up and 3-5 mins into the drive my check engine light popped up i went to get it scanned and code “P052E” came back, I did some research about the part and i come across a forum called MBworld and many others are having this same problem. I ask for a recall.

Reported

Feb 2025

Incident date

Feb 2025

Mileage

Not provided

Outcome flags

None reported

--The sunroof glass suddenly shattered without any prior warning while the vehicle was in driving on the road. Some of the broken glass pieces scattered throughout the interior of the car. --The sudden shattering of the glass roof created a hazardous situation for the driver and passengers. Although no one was injured, we were shocked and initially thought it might be an explosion or gunfire. Additionally, the tiny glass shards is very dangerous. --We have called dealer and they said there might be several similar cases reported. --The vehicle has not yet been inspected by the manufacturer, police, or insurance representatives, but I have called dealer and insurance company. --There were no warning lights, messages, or symptoms indicating a potential failure before the incident. The glass shattered unexpectedly and spontaneously while driving.

Reported

Feb 2025

Incident date

Feb 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated that there was an abnormal fuel odor inside the vehicle when the heater was activated. The contact stated that the cabin air filter was replaced; however, the odor was lingering inside of the vehicle. There was no warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed and the contact was informed that there was gas leaking onto the transmission and that the fuel rail, fuel hose, and fuel injectors needed to be replaced. The contact referenced NHTSA Campaign Number: 21V961000 (FUEL SYSTEM, GASOLINE); as a possible cause for the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 53,000.

Reported

Feb 2025

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported

During cold weather there is always a gasoline smell when starting the engine that eventually goes away. On 01/20/2025 the smell was so intense that I decided to stop the engine and leave the car outside the garage just in case. Upon opening the hood, I noticed an amount of a type of liquid similar to gasoline right on the undercarriage protector covers. I could not reach with my hands but instead I used a wood stick that I had in the garage. I reached the liquid and submerged the stick for like 10 seconds and pulled it out. When I smelled it, it indeed smelled like gasoline. I took the stick to the back patio and lighted it up and as I suspected, the tip of the stick lighted up like a torch. I called a nearby mechanic and made an appointment to check it out and today (01/23/2025) I am bringing it in. I went to Youtube and found numerous videos showing this "well known issue" with some of the fuel lines in this type of vehicle which I believe is a tremendous hazard. Just imagine that when I turned the engine up on 01/20/25 the engine could had gone up in flames burning not only the vehicle, but my entire house with maybe my family inside? Please take serious note on this issue and try to come up with a mandatory solution for the problem. I will let you guys know the findings from the Mercedes mechanic once the job if completed in case you need more information. Thanks

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

My driver seat bottom has a rip in the seam . It is exposing the heat wires for the heated seats . I can’t use the heated seats because of the wire exposed .

Reported

Jan 2025

Incident date

Jul 2024

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated while reversing at approximately 10 MPH, there was a clunking sound coming from the steering wheel. The contact shifted into drive and while driving approximately 15-20 MPH, the clunking sound persisted, and the steering wheel seized. There were no warning lights illuminated. The vehicle was towed to a certified mechanic who diagnosed that the aluminum bolts in the drive shaft had corroded and sheared off. The contact was informed that the steering rack and bolts needed to be replaced. The vehicle had not been repaired. The dealer had been informed of the failure and confirmed that the VIN was not included in the Service Campaign Number: 2019080019 (Steering). The manufacturer was informed of the failure and confirmed the Service Campaign Number: 2019080019 (Steering). The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 78,000.

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

The roof fabric headliner getting separated from its foam backing. That created two sagging fabric pockets on both ends near the rear windshield.

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

Smells like gas and my auto group gave me a recall campaign bulletin showing recall for my make model and year (Mercedes c300 2016), but my VIN doesn’t show it as being covered by that recall.

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

My check engine light came on and I got it tested. The code came back as P052E. The power train system valve.

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

The rear differential failed, causing both rear axles to be broken and the vehicle to lose all propulsion on a city road. A noise in the drivetrain under acceleration was first reported to a dealership in Nov 2023 about five months prior to the failure, but the report was dismissed as tire slippage and not addressed further. Then the failure occured in April 2024, and the vehicle was towed to a dealership and repaired out of warranty at great expense. There were no warning lights or symptoms immediately prior to the failure.

Reported

Jan 2025

Incident date

Apr 2024

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2016 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the driving assist and another unknown warning light were illuminated. The vehicle was taken to the dealer, where it was determined that the turn signal and steering wheel modules needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was unknown.

Reported

Jan 2025

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported

the roof panel cracked straight down the middle

Reported

Dec 2024

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported

Fuel is leaking inside cabin whenever I turn on my heat

Reported

Dec 2024

Incident date

Nov 2024

Mileage

Not provided

Outcome flags

None reported

I have noticed a recurring issue during the colder months where there is a strong gas smell inside the cabin, and I have also observed fuel dripping into the engine compartment. This issue seems to occur primarily in winter conditions. I was surprised to find that there has been no official recall or service bulletin addressing this concern, especially given the potential safety implications.

Reported

Dec 2024

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported

PCV fault

Reported

Dec 2024

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported