2025 Mercedes-Benz GLC 300 Engine Problems
- Complaints
- 3about this part
- Share
- 19%of 16 total for the year
- Median mileage
- 17,107miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 3 complaints about the engine of the 2025 Mercedes-Benz GLC 300, 19% of the 16 complaints for this model year. Where a mileage was given, the median is 17,107 miles. 1 of these say a crash was involved, according to the filers.
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.
“I am writing to formally express my deep dissatisfaction and serious concerns regarding both my 2024 and 2025 Mercedes-Benz vehicles, purchased/leased through your dealership. I am now facing an unacceptable situation that not only violates my consumer rights but has repeatedly placed my personal safety in jeopardy. After significant issues with my original 2024 vehicle, I was provided a replacement, which I took delivery of on October 15, 2024. Unfortunately, within two weeks, the replacement vehicle was already back in the shop for repairs. …”
NHTSA complaint #11665555, filed 2025-06“The contact owns a 2025 Mercedes-Benz GLC 300. The contact stated that while her husband was driving at 5 to 10 MPH attempting to park the vehilce lunged forward traveling 20 feet and crashed into the house. The air bags deployed. No warning lights were illuminated , There was no injuries or fire. A police report was filed. The gas company was on the scene due to a gas leak. Additionally the vehilce was serviced for electrical issues. While reversing in the snow the vehilce lunged 20 feet and crashed into a unknown vehicle causing a scratch. …”
NHTSA complaint #11741988, filed 2026-06, 17,107 milesRelated service bulletins
- 11028531Feb 3, 2026Complaint Check engine light illuminate, or previously on One of the below Exhaust Flap fault codes stored in PTCU N127: P13C273 P13C278 P140473 Cause Various Remedy Model year…
- 11023049Sep 9, 2025Complaint Check engine lamp activated, coolant warning message, and engine fan running at full speed. Below fault codes stored in N127 PTCU related to LIN network components.
- 11018516May 15, 2025Complaint Check engine lamp activated, coolant warning message, and engine fan running at full speed. Below fault codes stored in N127 PTCU related to LIN network components…
- 11015543Mar 7, 2025Complaint Check engine light on. Engine in limp-home mode. Rough running. Low fuel rail pressure fault code P008700 stored in MRG2 control unit. Additional faults below may be…
- 11014684Feb 28, 2025Complaint Red oil pressure warning in instrument cluster One of the below fault codes is stored in powertrain control unit N127: P052497 The oil pressure is too low. The system…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 19% |
| 2024 | 7 | 33% |
| 2023 | 15 | 27% |
| 2022 | 10 | 16% |
| 2021 | 30 | 45% |
| 2020 | 22 | 31% |
| 2019 | 11 | 23% |
| 2018 | 28 | 32% |
| 2017 | 37 | 37% |
| 2016 | 38 | 28% |
Other parts of the 2025 Mercedes-Benz GLC 300
12 complaintsForward collision avoidance
3 complaintsOther or unknown
3 complaintsBrakes
2 complaintsSeats
2 complaintsVehicle speed control
2 complaintsExterior lighting
1 complaintsFuel system
1 complaintsSteering
1 complaintsBody and structure
1 complaints
← All problems reported for the 2025 Mercedes-Benz GLC 300
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