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Electrical systemPart report

2023 Mercedes-Benz C300 Electrical system Problems

Complaints
5about this part
Share
23%of 22 total for the year
Median mileage
6,000miles
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.

NHTSA recorded 5 complaints about the electrical system of the 2023 Mercedes-Benz C300, 23% of the 22 complaints for this model year. Where a mileage was given, the median is 6,000 miles. 5 recall campaigns on record are filed under a similar system.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The electrical wiring harness of my vehicle completely caught fire making my vehicle stopped working. Manufacture warranty refuses to acknowledge this as an ongoning issue with this models and forcing me to pay for my own repairs this is a danger to anyone driving this vehicle as the car entirely can be caught on fire at any given time.”

NHTSA complaint #11596594, filed 2024-06

“- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. …”

NHTSA complaint #11524034, filed 2023-05

“First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. …”

NHTSA complaint #11523001, filed 2023-05

“The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. The vehicle was not repaired. …”

NHTSA complaint #11544088, filed 2023-09, 6,000 miles

“The above multiple problems/parts at issue. To include Other/I am not sure. Started at or approximately February 2023. The (Automatic Folding Side View Folding Mirrors before resolution) Malfunctioned 3 separate times before being fixed. During that time the (Cooling System Malfunction Reduced Drive Performance Service Required), displayed 2 separate Unknown Dates on the Dashboard Screen. The MB Dealership Service Diagnostic Check made was not Able to Detect the Trouble and was Never Fixed). …”

NHTSA complaint #11555944, filed 2023-11

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2024436%
2023523%
2022728%
202117%
202039%
20191319%
20181010%
20173114%
20163211%
20155013%
2014910%
2013197%
2012124%
2011439%
20108419%
200919834%
200822834%

Other parts of the 2023 Mercedes-Benz C300

Forward collision avoidance
10 complaintsBrakes
5 complaintsOther or unknown
4 complaintsEngine
2 complaintsTires
2 complaintsFuel system
1 complaintsBody and structure
1 complaintsTransmission and drivetrain
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2023 Mercedes-Benz C300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology