2018 Mercedes-Benz E300 Engine Problems
- Complaints
- 9about this part
- Share
- 28%of 32 total for the year
- Median mileage
- 32,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the engine of the 2018 Mercedes-Benz E300, 28% of the 32 complaints for this model year. Where a mileage was given, the median is 32,500 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.
“Mb 2018 E300 would stop with me in the middle of traffic the stop and start system malfunctions and dealership refused to fixed the problem until I almost got killed. …”
NHTSA complaint #11415132, filed 2021-05, 40,000 miles“added information: the issue is the piston, it went off due to a bad part. Mercedes Benz knew about the issue with the type of engine M247. there is a class action lawsuit pending. But I'm reporting this because i didn't know and it happened to me just a month out of warranty. Now, the dealership is asking me to pay for the labor. the dealership is House Of Imports in Buena Park. This has to do with the piston failure.”
NHTSA complaint #11634616, filed 2025-01“The car did not give any warning before this issue came about. A matter of fact when I took it to the mechanic they were unable to do a diagnostic test because there were no error messages and check engine light never came on. After taking it to the dealership they were able to check the history and saw that the error code P061b00 shows that the clutch position switch module needs to be replaced. While driving in traffic the car went into N (neutral) and wouldn’t not go back in D (drive). It took several minutes of me trying to change gears but it eventually went into P (park). …”
NHTSA complaint #11665796, filed 2025-06“Recurrent crankshaft ventilation valve failures. Replaced 14 months ago and has failed again. This is a common and known issue with vehicles in E class from 2017 through 2019 and Mercedes has not issued a recall. Perhaps because it costs $3500 to replace it if out of warranty. Entire system replaced Feb 17, 2022 and has failed again (April 6th, 2023)”
NHTSA complaint #11515977, filed 2023-04“yellow check engine light came on and a few days later the car stalled on the road potentially causing an accident. took it to a shop and it has a p052e (crankcase valve issue), then took it to mercedes and theyve confirmed that oil has been leaking and it needs a new cvp ($3000) AND oil has leaked into the engine harness ($4000) but a few other indie shops have mentioned that id probably also have to replace the thermostat because thats usually damaged as well. You can google this issue and see that its insanely common, dangerous, and a huge financial burden on mercedes owners. …”
NHTSA complaint #11520095, filed 2023-05Related service bulletins
- 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…
- 11028003Jan 23, 2026Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA…
- 11027580Jan 10, 2026In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC is extending the…
- 11026596Dec 6, 2025Complaint <p>ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist, ESP® trailer stabilization, Adaptive Brake Lights, Lane Keeping Assist, Blind Spot Assist, Adaptive Brake…
- 11018530May 15, 2025Complaint Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 – Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase…
- 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…
- 11031806Aug 9, 2024In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (“MBUSA”) is extending…
- 11008064Aug 9, 2024In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class…
- 11031589Jul 9, 2024This NCU replaces the prior NCUs issued on August 25, 2023, August 31, 2023 respectively and, contains clarification on parts ordering.
Engine: other model years
Other parts of the 2018 Mercedes-Benz E300
7 complaintsOther or unknown
6 complaintsTransmission and drivetrain
5 complaintsSteering
4 complaintsForward collision avoidance
2 complaintsBody and structure
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsWheels
2 complaintsAir bags
1 complaintsBrakes
1 complaintsFuel system
1 complaintsLatches, locks and linkages
1 complaints
← All problems reported for the 2018 Mercedes-Benz E300
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