2016 Mercedes-Benz C-Class
Problems, recalls and owner-reported issues
Engine is the leading concern among 316 owner complaints filed for this model year. This is the 8th highest complaint count among 23 C-Class model years with reports.
Of the 2016 reports, 7 involved a crash and 5 involved a fire. 8 people were injured.
What owners report most often
Recalls and investigations
No safety recalls on file.
Representative owner complaints
316 reports, newest first.
Visibility, Jun 26, 2025
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
Engine, Fuel/propulsion system, Jun 9, 2025
Positive Crankcase Ventilation Regulator Valve Performance Code P052E indicates a fault in the Positive Crankcase Ventilation Regulator Valve Performance for a predetermined.
Visibility/wiper, May 30, 2025
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.
Electrical system, May 22, 2025
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.
Structure, May 21, 2025
* 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.
Steering, Electrical system, May 10, 2025
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
Power train, Other or unspecified, Fuel/propulsion system, Apr 20, 2025
The panoramic sunroof is locked in an open position and will no longer close.
Visibility, Apr 10, 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
Structure, Mar 26, 2025
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)
Electrical system, Engine, Mar 22, 2025
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
Fuel/propulsion system, Mar 8, 2025
Smells like gas strong
Power train, Feb 26, 2025
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.
Structure, Feb 18, 2025
--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.
Fuel system, Gasoline, Feb 14, 2025
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.
Steering, Jan 23, 2025
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.
Seats, Jan 23, 2025
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 .
Fuel/propulsion system, Jan 23, 2025
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
Visibility/wiper, Jan 22, 2025
The roof fabric headliner getting separated from its foam backing. That created two sagging fabric pockets on both ends near the rear windshield.
Fuel/propulsion system, Jan 21, 2025
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.
Power train, Jan 20, 2025
My check engine light came on and I got it tested. The code came back as P052E. The power train system valve.
Power train, Jan 10, 2025
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.
Steering, Exterior lighting, Jan 6, 2025
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.
Structure, Other or unspecified, Dec 28, 2024
the roof panel cracked straight down the middle
Engine, Fuel/propulsion system, Dec 12, 2024
Fuel is leaking inside cabin whenever I turn on my heat
Engine, Dec 5, 2024
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.