2014 Mercedes-Benz E350 engine problems
20 owner complaints filed with NHTSA name the engine on the 2014 Mercedes-Benz E350 — 7% of all complaints for this model year.
What owners report
“Issue with fuel injection for Benz E350 2014 2014 Mercedes-Benz E350 fuel injection issues often stem from faulty injectors causing misfires, often on Cylinder 5, or a recalled fuel feed line. Symptoms include rough idling, reduced gas mileage, stalling, and check engine lights (P0300-P0306 codes).”
filed Mar 9, 2026
“The camshaft adjuster failure. Though I'm told safety is not in immediate danger, it's a very expensive fix that can cause other issues if left unpaired. It began subtly with strange noises, hesitation during start-up, inconsistent performance. I take meticulous care of this vehicle. Regular…”
filed Sep 8, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other E350 years
| Year | Reports | Share |
|---|---|---|
| 2016 E350 | 5 | 10% |
| 2015 E350 | 2 | 6% |
| 2013 E350 | 15 | 9% |
| 2012 E350 | 20 | 9% |
| 2011 E350 | 13 | 6% |
| 2010 E350 | 15 | 8% |
| 2009 E350 | 5 | 8% |
| 2008 E350 | 13 | 8% |
| 2007 E350 | 28 | 8% |
| 2006 E350 | 50 | 13% |
Other reported problem areas on the 2014 Mercedes-Benz E350
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.