2017 Mercedes-Benz CLA250 Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 14%of 28 total for the year
- Median mileage
- 35,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2017 Mercedes-Benz CLA250, 14% of the 28 complaints for this model year. Where a mileage was given, the median is 35,000 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.
“Making a u turn , on 3 lane blvd, a complete transmission failure happened and coasted to halt. Upon halt, transmission would not engage, drive or reverse. Had there been heavy on coming traffic, I would have been t-boned currently the vehicle is with dealership under repair and evaluation.”
NHTSA complaint #11191962, filed 2019-03, 35,000 miles“While making a u turn on fl-881 forest hills blvd , the half shaft failed, causing transmission to dis engage... While oncoming traffic was heading toward me. Attached copy of maps.”
NHTSA complaint #11193961, filed 2019-04, 35,000 miles“Component or System That Failed or Malfunctioned: The component that failed was the partial-load ventilation valve, which is part of the engine’s crankcase ventilation system. This valve is responsible for regulating airflow and pressure within the crankcase during partial engine loads. A malfunction in this valve can lead to increased engine pressure, oil leaks, and potential damage to engine components. The component is still available for inspection upon request. …”
NHTSA complaint #11667130, filed 2025-06Related service bulletins
- 11037211Aug 29, 2026Complaint Intermittent shift feel or thud/clunk noise perceived, such as a brief jerk or transmission reaction during certain driving situations. May be most noticeable when…
- 11035005Jul 14, 2026Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of…
- 11026832Dec 19, 2025Complaint Oil residue in connector of transmission control unit in dual-clutch transmission models 724.0 and 724.1. Cause As part of the production process, the electrohydraulic…
- 11025648Nov 15, 2025Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse…
- 11022045Aug 5, 2025Complaint Customer complaints regarding automatic transmission 724.1 (8FDCT & 8FDCT hybrid) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair…
- 11019018May 21, 2025Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse…
- 11013298Jan 16, 2025Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse…
- 11010818Nov 20, 2024Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause…
- 10199675Jul 14, 2021Vibrations/ humming when moving off or maneuvering with the wheels turned
- 10186132Sep 12, 2020Humming/ vibrations/ noises from the area of the rear axle while maneuvering or when moving off
Transmission and drivetrain: other model years
Other parts of the 2017 Mercedes-Benz CLA250
7 complaintsAir bags
5 complaintsEngine
4 complaintsOther or unknown
4 complaintsBody and structure
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsSteering
2 complaintsWheels
2 complaintsEngine cooling
1 complaintsEquipment
1 complaintsFuel system
1 complaintsLane departure
1 complaints
← All problems reported for the 2017 Mercedes-Benz CLA250
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