2018 Mercedes-Benz C300 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 1%of 99 total for the year
- Median mileage
- 54,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2018 Mercedes-Benz C300, 1% of the 99 complaints for this model year. Where a mileage was given, the median is 54,000 miles.
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 contact owns a 2018 Mercedes-Benz C300. The contact stated while driving 35 MPH, there was white smoke coming from exhaust. The contact stated that the check engine warning light illuminated. The contact stated that after turning off the vehicle the smoke cleared. The vehicle was towed to dealer but was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 54,000.”
NHTSA complaint #11459021, filed 2022-03, 54,000 milesRelated service bulletins
- 10253722Apr 15, 2024Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation…
- 10246281Nov 17, 2023Fault code P06DA00 is found current or stored in engine control unit. Check engine light may be activated. Various causes Up to Model year 2018 Fault code P06DA00 can be…
- 10243565Sep 22, 2023In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (âMBUSAâ) is…
- 10243308Sep 12, 2023Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 â Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase…
- 10241531Aug 24, 2023In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (âMBUSAâ) is…
- 10209874Mar 11, 2022Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz, has determined that on certain MY 2015-2018 C-Class and GLC-Class (205 and 253 platform) vehicles, the software…
- 10206077Dec 8, 2021"MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 â Boost Pressure is Too High"" "
- 10202530May 25, 2021Remote start causing CEL and U012600.
- 10189400Feb 11, 2021Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2018-2019 C and E-Class vehicles (205/238 platforms), an…
- 10169585Nov 14, 2019Replace heat shield of exhaust system
Engine cooling: other model years
Other parts of the 2018 Mercedes-Benz C300
34 complaintsOther or unknown
23 complaintsBody and structure
14 complaintsSteering
12 complaintsElectrical system
10 complaintsFuel system
10 complaintsAir bags
4 complaintsForward collision avoidance
4 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsBrakes
2 complaintsExterior lighting
2 complaintsTires
2 complaints
← All problems reported for the 2018 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