2019 Mercedes-Benz CLS 450 Engine Problems
- Complaints
- 2about this part
- Share
- 13%of 15 total for the year
- Median mileage
- 2,380miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2019 Mercedes-Benz CLS 450, 13% of the 15 complaints for this model year. Where a mileage was given, the median is 2,380 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.
“My car cut off on the busy 405 freeway as I was driving. I have had the brand new car 3 months . I stared to receive the following alerts on the car panel: blind spot assist inoperative , active brake assist functioned limited , attention assist, system suspended . The call slowly stalled on the freeway. I had to exit on the shoulder of the freeway with my hazard lights on. The car cut off. It started again. I tried to continue my trip, but the same issue happened 2 more times. I exited the freeway near ucla . Mercedes roadside assistance picked up the car for tow. This happened on may 28th. …”
NHTSA complaint #11217434, filed 2019-06, 2,380 milesRelated service bulletins
- 11038185Sep 26, 2026Complaint Sporadic warning message in instrument cluster "Engine oil pressure, stop switch off vehicle" (or similar) is shown in red on vehicles with low mileage. Cause…
- 11038176Sep 17, 2026Complaint Red coolant warning in instrument cluster. Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for fault…
- 11034064Jun 19, 2026Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline…
- 11028807Feb 14, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software does not correspond to current…
- 11015545Mar 4, 2025Complaint Check engine light illuminated Fault code present in MRG3 control unit P22C800 or P22C900 - The valve of the exhaust gas turbocharger is jammed. Cause Check valve in…
- 11012056Dec 19, 2024Complaint Check engine light illuminated Fault code present in MRG3 control unit P22C900 - The valve of the exhaust gas turbocharger is jammed closed. Cause Check valve in charge…
- 11012055Dec 19, 2024Complaint Low engine oil level warning. Engine oil leak under vehicle. Cause Rear crankshaft radial seal rolled during installation Remedy -Check for external oil leak with…
- 11010744Nov 19, 2024Complaint Engine cooling fan running for an extended time after switching off vehicle. Cause Optimized thermal management in latest PTCU software. Remedy This is a normal…
- 10154018Jan 25, 2019ESP, BAS, PRE-SAFE - Fault message in instrument cluster
- 10158329Oct 9, 2017Oil in engine wiring harness
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 1 | 20% |
| 2019 | 2 | 13% |
Other parts of the 2019 Mercedes-Benz CLS 450
5 complaintsElectrical system
4 complaintsSteering
3 complaintsSuspension
2 complaintsTires
2 complaintsBack-over prevention (rear camera)
1 complaintsBrakes
1 complaints
← All problems reported for the 2019 Mercedes-Benz CLS 450
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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