fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
10,461 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2014 Mercedes-Benz E350 engine problems

engine problem

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2014 Mercedes-Benz E350 Owner Comments

problem #5

Mar 032016


  • 29,000 miles


While driving on the highway, I attempted a heavy acceleration to get the car up to traffic speed. Two times in the past 60 days, the car seriously malfunctioned with multiple dashboard indicator lights and the main text "pre safe functions limited" accompanied by a total loss of speed control. The accelerator became 100% unresponsive and I had to coast to an emergency lane. There was significant danger in both instances as I had to cross multiple lanes of traffic with no power to get to safety. The weather was clear and the external sensors were not obstructed by dirt or snow- which has previously caused the pre-safe functions limited message. I believe that the multiple errors indicated on the dashboard are all erroneous to the core issue of a sudden and total loss of power upon heavy acceleration. The resolution was to shift the car into park, push the ignition button as if turning the vehicle off, wait and restart. The car operates normally upon restart. Note that the engine appeared to already be off prior to shifting into park. It is as if the heavy acceleration killed the engine. This issue has potential fatal consequences if the driver is unable to get the car out of the lane of high speed traffic-- as I was in. A less experienced or panicked driver could easily fail to handle the situation and get rear ended at high speed as the car can only be reset by getting it into park and restarted. Similar blog posts online report the same with other Mercedes vehicles. I have had the car for four months and it has happened twice. Seems like a software/electronic issue causing the mechanical issue to me. Very dangerous.

- Northfield, IL, USA

problem #4

Apr 202015


  • 3,000 miles
I was traveling on highway 26 at approximately 60 mph getting ready to merge onto highway 526, when the entire digital warning panel lit up and then went dead, with the engine inoperable light coming on and asking me to refer to the owners manual. All power was cut from the gas pedal and I was lucky enough to be able to coast to a very small strip of median without being hit by any other vehicles. This is a very heavily trafficked area and charleston being a port city I was very fortunate that the trucks that were around me were able to avoid hitting me. If I had been in another situation, such as pulling out into traffic or trying to cross over a two lane highway the results could have been catastrophic to say the least. I have been told by the dealer that there was a bulletin issued involving the throttle valve actuator, topic # LI54.18-P-058597, version 9. they have not been able to tell me why this happened in the first place, cannot guarantee it will happen again and I would like to know why there was not a recall for this particular potentially life threatening issue? sincerely, [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Daniel Island, SC, USA

problem #3

Mar 302015


  • 1,100 miles
While driving on a side street looking for an address, a warning message appeared something like "lane guidance system inoperative". subsequently, the engine lost power and would not move the vehicle more than about 3 mph. We pulled off to the side, not knowing what to do. I shut off the engine and restarted it and it appeared to work normally for the rest of the trip home. We wonder what would have happened if we had been in a middle lane on a freeway when this happened. I plan on contacting the dealer today for more information and to have them inspect the car.

- Woodinville, WA, USA

problem #2

Nov 292014


  • 18,000 miles
Driving the car at 45 mph and the display messages come on that stated, "pre safe functions limited, inoperative" in addition, the esp and ABS warning lights illuminated. The vehicle loses power and has very limited acceleration. It has occurred twice, once on city road and once on highway at 55 mph. Shutting and restarting the car eliminates the problem for the time being. If this happens again and I am unable to pull over safely, it will be a life-threatening emergency. I will be rear-ended at high speeds by traffic behind me. After the first incident, I took it to dealer and they adjusted computer. The same exact thing happened just 4 days later. This has the potential to cause massive fatalities similar to those in the GM debacle. I see this has also been reported as a problem in the 2014 cla 250 models.

- Manalapan, NJ, USA

problem #1

Nov 302014

E350 6-cyl

  • 1,203 miles
Was driving on 95N around 65 mph when vehicle loses power !!! I was in the left hand lane and traffic was flowing. It was by the grace of god that I made it to the right shoulder without causing a major accident for myself as well as for other vehicles. The engine light came on and the anti skid and anti skid off lights came on also it said consult owners manual. The vehicle is brand new and I never want to drive it again!!!. after I stopped I cut the vehicle off and restarted the vehicle to try and get home. On the way home it did it three more times. I could have killed myself and my daughter also who ever else was on the road. Once I got home I was really pissed after reading about all the other Benz owners that had the exact same problem. This is terrible for a brand new Mercedes !!!!!!

- Elkton, MD, USA

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