Check engine light comes on, Error Code P052E, after a lot of research, this is a known defective part by Benz. Huge safety issue not addressed by them. Very costly to fix for a customer. There is a new and improved replacement part from Benz indicating they are aware of the faulty old parts that are currently in those cars but yet they have failed to do a recall.
2018 Mercedes-Benz C300 engine problems
35 complaints (35% of all complaints for this car).
- owner complaints
- 35
- of this car's complaints
- 35%
- crashes
- 0
- recalls
- 0
Which part fails
- Exhaust system1
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
Mercedes-Benz C300 engine problems in other years
Specific symptoms reported on the 2018 Mercedes-Benz C300 engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
What 2018 Mercedes-Benz C300 owners say
Most recent owner complaints, unedited.
My vehicle only had 31,000 miles and I experienced engine failure. I bought a new engine for 16, 500. 00 dollars. Mercedes Benz did nothing. I almost got in to several accidents because the engine completely stop on the interstate. Almost got hit by several cars. This is unacceptable.
The engine light is on with only 35000 miles. Upon using an OBD2 scanner, error code P052e positive crankcase ventilation(PCV) malfunction was detected. It's a problem that I researched and noticed a lot of people having the same issue. I was told that this can cause the car to stall or shut down? This causes serious risk and safety issues to drivers, passengers, and pedestrians. With so many complains about this problem, I believe the manufacturer and dealers should take responsibility before tragedies happen.
I need the Crankcase ventilation valve replaced and have heard many complaints about this repair.
The day after I purchased my c300, the engine light popped on. I went back to dealer and they said it was a recall because of a crank case (PCV). I was upset because they never said anything about it. This was April of 2024. Note:(This Dealer was not Ray Catina’s of Edison). I went to Ray Catina’s in Edison for them to inspect car and I have been calling because I was told it was a national recall and it was on back order and should be here in June. It is now almost August and I called on the 23rd of July and received a call from Ray Catena on the 24th for them to tell me that “they were told that the new plan from Mercedes is to bring my car in and they will clear code. That’s what they are told to do.” To me, this is NOT fixing the issue. I am a little aggravated because I bought my car on [XXX] and have NOT been able to feel good because not sure what ramifications will come with me driving my car with this issue. I was told that driving with this engine light on and code that it will not harm my car. They now say Mercedes was told to reset the code and that will resolve issue? I believe this is a band aid not a fix!!! I’m a little upset. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
P052E positive crankcase ventilation regularly valve
Car needs an engine rebuild at 90K miles due to a cracked piston #1, a problem with a car that received regular oil change intervals and proper service should not have
Code's p052w-71 & p060a-00 these's codes has been an issue with mercedes benz for quite some time now... Its been complaints after complaints and mercedes benz has not taking ownership of the issue.. This is definately a recall please look into this I can be reach at [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)
The Valve for crankcase ventilation has a malfunction. The actuator is blocked.
Error code P052E Positive crankcase ventilation regulator valve performance
Questions about the 2018 Mercedes-Benz C300 engine
Does the 2018 Mercedes-Benz C300 have engine problems?
Owners have filed 35 complaints about the engine of the 2018 Mercedes-Benz C300, 35% of all its complaints, more than any other problem.
At what mileage do 2018 Mercedes-Benz C300 engine problems start?
Not enough complaints include the mileage to tell.
Was there a recall on the 2018 Mercedes-Benz C300 engine?
There is no recall for this problem on this model year.
What year does the Mercedes-Benz C300 have bad engine?
The Mercedes-Benz C300 model years with the most engine complaints are 2015 (128 complaints), 2016 (95 complaints) and 2017 (79 complaints).
Other 2018 Mercedes-Benz C300 problems
Body 14Steering 12Electrical 10Fuel system 10Driver assistance 5Airbags 4Lights 3Visibility 3Brakes 2Tires 2Transmission 2Seat belts 1Seats 1Wheels 1
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