2020 Mercedes-Benz CLA250 Engine Problems
- Complaints
- 4about this part
- Share
- 20%of 20 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2020 Mercedes-Benz CLA250, 20% of the 20 complaints for this model year.
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.
“My vehicle's cylinder head needs to be replaced due to a leak in the valve seat. It is available for inspection upon request. My safety and the safety of others were at risk because the engine of the vehicle could of failed at anytime while the vehicle was in use. This could have lead to an accident. The problem has been confirmed by the dealer and the dealer is recommending I replace the cylinder head. The dealer's service center had a certified technician perform a diagnostic test on my vehicle. There were no warnings, messages, or symptoms prior to the check engine light coming on. …”
NHTSA complaint #11534307, filed 2023-07“Engine was failed prior to purchase, it is available for inspection. Engine jerks while driving. Dealer changed engine and problem got worse. Vehicle was inspected at Mercedes Benz Manhattan. Engine light keeps coming on and engine oil raises above normal level and warning light comes on and dealer says its normal.”
NHTSA complaint #11614748, filed 2024-09“Approximately several weeks ago, the check engine light illuminated in my vehicle. No issues were present at that time. Shortly after, approximately a week later, the vehicle began to stutter when reversing or driving on surface streets after being on the highway. The vehicle also would stall after the check engine light flashed several times. The vehicle would need to be turned off and turned back on to accelerate correctly and not stall. This has not been inspected by the dealer yet, a service appointment has been made. …”
NHTSA complaint #11500957, filed 2023-01Related service bulletins
- 11034506Jul 2, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167: SW has been released. Update the FSAM to the latest SW version. 465, 290, 118, 243…
- 11030302Mar 27, 2026Complaint -Check engine light illuminated. -Engine runs rough. -Poor shifting or jerking when accelerating. -Fault codes stored related to mixture formation, injector quantity…
- 11029057Feb 28, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the control unit software for the engine electronics does not…
- 11028267Feb 2, 2026Complaint -Check engine light illuminated. -Engine runs rough. -Poor shifting or jerking when accelerating. -Fault codes stored related to mixture formation, injector quantity…
- 11021897Aug 4, 2025Complaint: Check engine light comes on when driving/starting the vehicle. No drivability concerns. Cause: Communication error in G1/3 - 48 V on-board electrical system battery…
- 11016046Mar 26, 2025Complaint Check engine light comes on when driving/starting the vehicle. No drivability concerns. Cause SW conflict of the 48V battery Remedy 1.-Check for SW in the 48V battery…
- 11008712Oct 4, 2024Complaint Check engine light on. One of the below fault codes is current in the engine control module (N3/10). P04DB29, P04DB31, P04DB79 Cause Open circuit or high resistance to…
- 11008056Sep 16, 2024Complaint Check engine light on. Fault code P207273 - "Throttle actuator valve is blocked due to ice" stored. Engine may crank and not start. Fault code P210185 may also be…
- 11005313Jul 17, 2024Complaint Check engine light on and fault code P019185 current or stored in MED41 control unit. Adaptation and misfire faults may also be stored. Vehicle may enter limp home…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 1 | 17% |
| 2021 | 1 | 14% |
| 2020 | 4 | 20% |
| 2019 | 4 | 17% |
| 2018 | 6 | 15% |
| 2017 | 4 | 14% |
| 2016 | 15 | 22% |
| 2015 | 14 | 23% |
| 2014 | 66 | 37% |
| 2013 | 1 | 11% |
| 2012 | 3 | 43% |
Other parts of the 2020 Mercedes-Benz CLA250
5 complaintsBack-over prevention (rear camera)
4 complaintsOther or unknown
4 complaintsFuel system
3 complaintsBrakes
2 complaintsSteering
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsAir bags
1 complaintsEquipment
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsSuspension
1 complaints
← All problems reported for the 2020 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