There are 7 stored owner reports matching the engine leading-label group for the 2018 Mercedes-Benz E-Class in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 7 of 7 matching reports.
Open the full vehicle complaint log (all categories)Variable Valve Timing Camshaft KNOWN DEFECT rendering the car unusable at only 100K miles.
Check Engine Light, running fault code P052E71 - needs software update for N3/10 Engine control unit.
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.
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. There should be an immediate recall. See the inspection here: https://app.mykaarma.com/service-cart/mpi/8RlVgZhzCNsvpezrI1ZEEtxKAPluMxrUUivaOkycfRg/detail
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)
TL* THE CONTACT OWNS A 2018 MERCEDES BENZ E400. THE CONTACT STATED THAT THEY WERE SMELLING A BURNING ODOR EMITTING FROM THE ENGINE OF THE VEHICLE. THE CONTACT STATED THAT WHEN THE AUTOMATIC DRIVING WAS ACTIVATED THE VEHICLE WOULD ACCELERATE TO HIGHER SPEEDS. THE CONTACT WOULD HAVE TO PRESS THE VEHICLES BRAKES OBSESSIVELY. THE VEHICLE'S SIDE VIEW MIRRORS ALSO FAILED TO ROTATE. THE CONTACT STATED THAT WHEN A FAMILY MEMBER WAS OBSERVING THE VEHICLE THEY FOUND THE ENGINE TO HAVE BEEN DAMAGED. THE CONTACT TOOK THE VEHICLE TO THE DEALER (MERCEDES-BENZ OF COCONUT CREEK 4250 FL-7, COCONUT CREEK, FL 3307; (954) 406-1167) WHO STATED THAT THE VEHICLE'S BATTERY HAD MALFUNCTIONED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND OPENED A CASE REGARDING THE MATTER. THE APPROXIMATE FAILURE MILEAGE 21,000.
I WAS DRIVING IN THE FLORIDA TURNPIKE TRAVELING FROM MIAMI I STOPPED AT A SERVICE STATION TO GO TO THE RESTROOM AND WHEN I CAME BACK MY CAR HAD A FIRE COMING FROM THE ENGINE. I HAD TO GET THE FIRE EXTINGUISHER FROM THE GAS STATION, OPENED THE HOOD AND PUT DOWN THE FIRE. THE VEHICLE WAS STATIONARY AND THE ENGINE WAS NOT RUNNING. MY CONCERN WAS NOT JUST MY SAFETY BUT THE FACT THAT I WAS SO CLOSE TO THE GAS STATION. THERE WAS 0 WARNING AND NO ERRATIC BEHAVIOUR FROM THE CAR BEFORE THIS.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.