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really awful
Crashes / Fires:
2 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
25,247 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.

2012 Mercedes-Benz E350 engine problems

engine problem

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2012 Mercedes-Benz E350 Owner Comments

problem #4

Jan 082016


  • 55,400 miles


When starting the vehicle has a slow start. When in motion the vehicle drives rough, and cuts off, then the check engine light came on. This vehicle has a great maintenance record only serviced at the Mercedes dealer and has 0nly 54000 miles. This is clearly an engineering issue which was a safety issue. Mercedes repaired. They found the camshaft damaged, head damaged, and gear damaged and replaced camshaft and gear only. They charged my for their engineering failures $4874.38. For this engineering and safety faikure I believe this vehicle should be recalled before the lost health and life is lost, and owners should be recompense for the damage.

- Hoover, AL, USA

problem #3

Nov 102014


  • 19,990 miles
Ticking/ tapping noise from the engine bay when car is excelerating, especially when going uphill.

- Portola Hills, CA, USA

problem #2

Aug 142014


  • 5,597 miles
The contact owns a 2012 Mercedes Benz E350. While the vehicle was parked and the key was removed from the ignition, the vehicle jerked and rolled backwards before stopping independently. In addition, the contact heard an abnormal noise and the vehicle veered to the left when reversing. The dealer was unable to diagnose the failure but made the following repairs: The cover on the front passenger side cylinder head, removed/installed a seal, non-return valve, chain tensioner, sealant mb, flange gasket, hexalobular bolt, the cover on the front driver side cylinder head, removed/installed a seal, left and right secondary drive chain tensioners, front cover cylinder, and the check valve. On another occasion, the vehicle rolled in reverse and crashed into the bumper of another vehicle. The door of the vehicle bruised the contact and medical attention was required. The vehicle was towed to the dealer. A police report was not filed. The dealer was not able to diagnose the failure and the vehicle remained at the dealer. The manufacturer was notified of the failure. The approximate failure mileage was 5,597.

- Sarasota , FL, USA

problem #1

Mar 182014

E350 6-cyl

  • 20,000 miles
While driving on an express way in dallas, Texas my gps made an error concerning an exit and I was required to divert quickly to the left to make exit lane.time was 6:00 pm, heavy traffic conditions and road and weather conditions were excellent and dry. My Mercedes pre activated a skid mode and there was approximately a 70% cut back in engine power.a yellow engine light came on and skid mode came on operator screen but there was no skidding taking place. I was helpless with no power to keep up with the 50-60 mph traffic while trying to get into lane.consequently a semi tractor struck my left rear fender /bumper causing damage to my Mercedes. There was no damage to the tractor. According to Mercedes the vehicle was supposed to do this as a safety feature. If this is true then they actually in my opinion while developing safety features created another un safe condition where as the semi could have run over my wife and I killing us both. This was truly a near miss and we are very much concerned about it happening again to us or some one else, resulting in a fatal accident, not just a fender bender. Mercedes is in denial concerning any un safe condition and refused to take any responsibility for any damage that this car caused. Please review this vehicle for possible call back before some one does get seriously injured. Perhaps skid mode or traction control may be helpful but engine cut back and power loss needs to be left to the operator not the vehicle controlling it's self. Your help would be graciously appreciated.

- Chico, TX, USA

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