2016 Mercedes-Benz C-Class

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

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

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.

Strong fuel smell in cabin Can maybe cause a fire

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.

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.

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.

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.

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.

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 !

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.

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.

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

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

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.

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.

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

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.

* 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.

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