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Transmission and drivetrainPart report

2022 Mercedes-Benz GLC 300 Transmission and drivetrain Problems

Complaints
4about this part
Share
7%of 61 total for the year
Median mileage
35,944miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the transmission and drivetrain of the 2022 Mercedes-Benz GLC 300, 7% of the 61 complaints for this model year. Where a mileage was given, the median is 35,944 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.

“Defect Summary: Since 2024, my 2022 Mercedes-Benz GLC300 has had a persistent, abnormal engine noise consistent with the sound of a 4-cylinder diesel engine, despite being gasoline-powered. The noise occurs both while idling and in motion. On several occasions, the coolant warning light illuminated while the noise persisted. The defect has worsened over time, becoming louder and more frequent. Events & Safety Risks: The dealership repeatedly claimed “no problem found” because no warning lights appeared and no scanner codes were present, ignoring my time-stamped video evidence. …”

NHTSA complaint #11678034, filed 2025-08

“The contact owns a 2022 Mercedes-Benz GLC300. The contact stated that while driving 60 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that there were several unknown warning lights illuminated before the engine seized. The vehicle was restarted; however, while driving at an undisclosed speed, the failure reoccurred. The contact started the vehicle again, and the vehicle was slowly driven to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. …”

NHTSA complaint #11682886, filed 2025-08, 51,519 miles

“The contact owns a 2022 Mercedes-Benz GLC300. The contact stated while driving 76 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the vehicle speed independently decelerated. The contact safely drove the vehicle to the shoulder of the road. The contact stated that a warning light illuminated indicating do not shift the gear, contact the dealer. In addition, the contact stated that the gear shifter seized, and the wheels locked up. The contact stated that the failure occurred while driving on a major highway. …”

NHTSA complaint #11613083, filed 2024-09, 20,370 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2024524%
202335%
202247%
202146%
202046%
2019511%
201889%
201777%
201664%

Other parts of the 2022 Mercedes-Benz GLC 300

Fuel system
21 complaintsSteering
14 complaintsElectrical system
12 complaintsEngine
10 complaintsOther or unknown
7 complaintsBrakes
4 complaintsVehicle speed control
4 complaintsForward collision avoidance
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsAir bags
2 complaintsSuspension
2 complaintsBack-over prevention (rear camera)
1 complaints

← All problems reported for the 2022 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