16 complaints reported

2018 Mercedes-Benz C-Class UNKNOWN OR OTHER

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
16
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

Aug 2025

Rearview Camera is not displayed when the vehicle is placed in reverse. The display shows a black screen. A Recall Notice has been published for other vehicles of the same year, make, and model. The failure of the Rearview Camera results in safety risks during normal use of the vehicle.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Sep 2025
Jul 2025

I was driving around my neighborhood one day with my panoramic sunroof open and at the red light i wanted to close the sunroof (california summer sun is no joke) and it made this really big 'THUMP' noise, thought the sunroof glass cracked. After the big THUMP noise, the sunroof wouldnt close and this is after the light turned green so i am driving slowly because there was rattling noise coming from the sunroof and didnt want the sunroof to fly out from the car. So i had to pull over and try to figure out if its okay to drive with stuck sunroof with it rattling noise. after that i tried to close and open the sunroof and wouldnt move or do anything, it was just stuck. So i turned my hazzards on then drove slowly back home. after about 30 mins playing with sunroof in my garage, hoping that i will close (then at least i can still drive my car without being scared that it will fly out from my car), finally go it to closed but now it doesnt work at all. then i have found out that from 2014 to 2018 pano sunroof is known issue and there were safety recall on some pano sunroof already on this model. i called 6 places and they told me (besides from how many they had already repaired) the holder on the sunroof rail is broken so the whole rail assy needs to be replaced. imagine if i was on a freeway going 65+ and if this would have happend and this HUGE pano sunroof flew out from my car... this is very big safety issue and that probably why 2017 (same pano sunroof) was on a recall.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ AMG C43, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jun 2025
Jul 2024

There are Water intrusion that happened to other Model of Mercedes, my car have the same problem, when i bring it to the Mercedes dealer, they found a lot of water inside the trunk, but they insisted that I had accident, but there no accident that I know of.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Dec 2023
Jun 2024

Was sold Car Feb,27,2024 from dealership the car violently vibrates at 60mph took it to 3 Repair shops

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Feb 2024
Mar 2024

Sun roof not opening. Mechanic notified me that this is a known issue, but no recall at this time.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jan 2024
Jan 2024

C300 Crankcase Ventilation Valve Code P052E

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jan 2024
Jul 2023

Panoramic roof suddenly shattered while driving on a clear day.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ AMG C43, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jul 2023
May 2023

The check engine light came on with the error code P052E - PCV valve failure while the car is only driven for less than 38K miles. I am worried about the quality of the car/engine.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jan 2023
Apr 2023

Rear camera doesn’t work

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Apr 2023
Feb 2023

The fault code P052E71 is logged in the fault memory of the engine control unit. Cause: Possible cause: The component or the electrical actuation at the partial load crankcase ventilation valve (Y58/2) may be faulty or might not activate initially.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Feb 2023
Aug 2022

I have a 2018 C class. Purchased it with 32k mikes 12/21. April 2022 I started experiencing issues. When I put my car in drive/reverse the gears shift it’s self back to neutral. When I’m stopped at a light it will take me out of drive and shift it’s self in neutral. I’ve taken my car to the Mercedes dealer for a diagnostics paid out of pocket and they were unable to find the issue. This is a major safety concern and I would like to be contacted as it is unsafe to drive and no one seems to be able to locate the issue so it can be repaired.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Mar 2022
Jul 2022

Damaged cords on the soft top interior trim with the following characteristics: - Cord snapped - Cord worn - Cord torn out - Cord sheathing damaged Cause: Possible high tensile stresses on the cords during the soft top sequence

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ AMG C43, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jul 2022
Jun 2022

Engine light is on recently on my 2018 C300. Car has 36000 miles on it. It is diagnosed as the valve for the crankcase ventilation. The actuator was blocked.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Mar 2022
Oct 2021

I WAS TOLD THAT THE PRESENT RECALL HAD BEEN REPAIRED. YOU STILL HAVE IT AS AN OPEN RECALL, WITHOUT A PRESENT FIX. HOW LONG DOES IT TAKE TO REMOVE A RECALL?

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ AMG C43, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jun 2021
Apr 2021

MERCEDES-BENZ HASN'T UPDATED THE RECALL ON MY VEHICLE

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Feb 2021
Jul 2020

THE SUNROOF SPONTANEOUSLY EXPLODED OUT OF NO WHERE. SOUNDED LIKE A SHOTGUN BLAST.

Type: Vehicle, Vehicle: 2018 MERCEDES-BENZ C 300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jul 2020

Trend Over Time

Complaints by year

Quick Summary

The 2018 Mercedes-Benz C-Class has 16 UNKNOWN OR OTHER complaints on file. Review the timeline above for detailed owner experiences.