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EnginePart report

2018 Mercedes-Benz E400 Engine Problems

Complaints
3about this part
Share
13%of 23 total for the year
Median mileage
21,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the engine of the 2018 Mercedes-Benz E400, 13% of the 23 complaints for this model year. Where a mileage was given, the median is 21,000 miles. 2 a fire, according to the filers.

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.

“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.”

NHTSA complaint #11164363, filed 2019-01, 6,500 miles

“On may 30, 2020, around 3 pm, my son was the driver and my wife and I were the passengers driving in jersey city, nj (USA). While changing lanes on the road, the car suddenly stopped functioning. All dashboard lights came on and it showed a car with zig zag lines and stated inoperable. We were in the middle of the road in a dangerous situations with cars going around us. The steering wheel froze and the brakes were not functioning. We tried to restart the car many times with the dashboard lights coming on and stating inoperable. …”

NHTSA complaint #11327065, filed 2020-06, 22,777 miles

“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. …”

NHTSA complaint #11407108, filed 2021-04, 21,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2018313%
201626%
201517%

Other parts of the 2018 Mercedes-Benz E400

Other or unknown
6 complaintsElectrical system
4 complaintsSeat belts
3 complaintsSteering
3 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsLane departure
1 complaints

← All problems reported for the 2018 Mercedes-Benz E400

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