2017 Mercedes-Benz C300 Electrical system Problems
- Complaints
- 31about this part
- Share
- 14%of 216 total for the year
- Median mileage
- 44,771miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 31 complaints about the electrical system of the 2017 Mercedes-Benz C300, 14% of the 216 complaints for this model year. Where a mileage was given, the median is 44,771 miles. 1 of these say a crash was involved and 2 a fire, according to the filers. 1 recall campaign on record is filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“So I just got my mercedes benz C300 4matic I only have 44,711 miles on it and I barely drive it, so today I was driving and the whole day things were great and I stopped at a store got back in and it says 'power steering malfunction' I was on a street in the city, I'm on confused on how this is happening to a car I just got from the dealership that is practically new, now let me mention that this is a on and off issue through out this whole day it has came on and off twice”
NHTSA complaint #11415611, filed 2021-05, 44,771 miles“When the car is in the a feature, where it turns on and off when not in motion, it gets stuck in that mode as if a magnet is holding it in that position. It will not move, it stalls. I turn it off and turn it back on and sometimes it still will not move, sometimes, it will not turn back on. This has happened on several different occasions. Once, I pulled to the side of my mailbox to pick up mail, and another occasion I pulled into my garage, and it stopped, and would not turn on. This is very dangerous, I would hate to be in traffic, railway crossing, ir stop sign and this occurred. …”
NHTSA complaint #11402743, filed 2021-03, 36,000 miles“Piston 1 cracked at 48,000 miles. Mb told owner that the engine had to be replaced but when finding out that the warranty was up at 50,000 they replaced the piston instead. Car is still shaking at idle and rough ride. Engine shakes and jerks.”
NHTSA complaint #11337524, filed 2020-07, 48,000 miles“The 2017 Mercedes-Benz C300 vehicle suffered a complete loss of power/electrics while in motion at speed and in traffic, causing the vehicle to unexpectedly stop on two separate occasions. The loss of all electrical supply leaves the vehicle immobile, without warning indicators and cannot be moved. The first incident was around 5pm in a busy road junction in the dark, with limited lighting. As the vehicle is black colored it it is difficult to see in these circumstances. The second incident was at another busy road junction in heavy traffic, at midday on a saturday. …”
NHTSA complaint #11282140, filed 2019-11, 20,000 miles“When i scan my vehicle there are Mercedes Benz fault codes pertaining to the electrical system but also recalls that haven’t been done but when looking Mercedes Benz web site and NHTSA WEBSITE these are aren’t showing up as my particular chassis being included as part of the campaign”
NHTSA complaint #11621666, filed 2024-10Related recalls
- 17V114000Feb 23, 2017Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2015-2017 C300 4Matic, C300, CLA250, CLA250 4Matic and CLA45 AMG vehicles, 2017 C300 4Matic Cabrio, C300…Covers: Mercedes-Benz C300 2015–2017, CLA250 2015–2017, AMG CLA45 2015–2017 +7 more
Related service bulletins
- 11036511Aug 24, 2026Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket…
- 11036142Aug 12, 2026Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5…
- 11036190Aug 6, 2026Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search…
- 11033855Jun 12, 2026Complaint Service code B1 displayed in the customer menu does not match the workshop code displayed in the workshop menu, e.g., 505 or 550A, which includes a service A. Cause The…
- 11033185May 26, 2026Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the…
- 11033016May 26, 2026Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market…
- 11032699May 12, 2026Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5…
- 11031202Apr 7, 2026Complaint When closing the door, the side window may remain slightly open (short stroke position). Automatic window raising function of side window inoperative. NOTE: Window is…
- 11030088Mar 9, 2026Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5…
- 11029927Mar 4, 2026Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 4 | 36% |
| 2023 | 5 | 23% |
| 2022 | 7 | 28% |
| 2021 | 1 | 7% |
| 2020 | 3 | 9% |
| 2019 | 13 | 19% |
| 2018 | 10 | 10% |
| 2017 | 31 | 14% |
| 2016 | 32 | 11% |
| 2015 | 50 | 13% |
| 2014 | 9 | 10% |
| 2013 | 19 | 7% |
| 2012 | 12 | 4% |
| 2011 | 43 | 9% |
| 2010 | 84 | 19% |
| 2009 | 198 | 34% |
| 2008 | 228 | 34% |
Other parts of the 2017 Mercedes-Benz C300
77 complaintsOther or unknown
36 complaintsFuel system
33 complaintsBody and structure
24 complaintsSeat belts
21 complaintsAir bags
15 complaintsSteering
13 complaintsTransmission and drivetrain
12 complaintsVisibility (wipers, defrost, mirrors)
9 complaintsForward collision avoidance
3 complaintsBrakes
2 complaintsEngine cooling
2 complaints
← All problems reported for the 2017 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