NHTSA (USA)High Risk
At a glance
What can fail
The front passenger air bag may be incorrect, possibly installed during a prior repair, and may not function properly in a crash.
This page covers 8 recalls, 272 owner complaints and EPA fuel economy for the 2014 Mercedes-Benz E350.
23–24 mpg combined
9.8–10.2 L/100km
Midsize Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 6 tested variants for this model year.
For the 2014 Mercedes-Benz E350, the dominant complaint themes center on the airbag system, brakes, and the electrical system. Airbag complaints are the most numerous, with owners describing warning lights, passenger seat sensor faults, and airbag system errors that leave the system in a non-ready state. Brake complaints are the second most-reported area, and the pattern there is fairly specific: owners describe brake line corrosion leading to fluid leaks, sometimes discovered only after a warning light appears while driving. Several owners note the corrosion concentrated near the subframe area. Electrical system complaints cover a range of issues including warning lights, module faults, and intermittent failures. A smaller cluster of owners also reports fuel odor near the rear of the vehicle, often noticed after filling the tank, with some describing intermittent leaks near the fuel tank that proved difficult to reproduce at a shop.
272
Total Complaints
10
Crash-Related
13
Fire-Related
7
With Injuries
By System
The 2014 Mercedes-Benz E350 has 8 recalls, with the most serious concerns spanning loss of power steering, a fuel line that can leak or fully disconnect near ignition sources, and airbag inflators that can explode and send metal fragments into the cabin.
The fuel line issue affects sedan models built within a narrow production window, where an incorrectly fitted fuel line connection can develop a leak or separate entirely, raising the risk of fire. A hood rubber seal can also fall into the engine compartment and contact exhaust components, creating a separate fire risk. On the airbag side, several overlapping concerns exist: the driver airbag can deploy without warning while driving, a passenger airbag inflator can rupture violently, and a software fault can prevent airbags from deploying correctly in a crash. There is also a recall specific to coupe and cabriolet variants where an incorrect passenger airbag may have been installed during a prior repair, meaning the bag may not perform properly when needed. The power steering system can lose its electric assist if internal control unit connections fail, making the wheel significantly harder to turn. Finally, a software fault in the emergency call system can report the wrong vehicle location to emergency responders, potentially delaying help after a crash.
At a glance
What can fail
The front passenger air bag may be incorrect, possibly installed during a prior repair, and may not function properly in a crash.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
What the fix does
Dealers will replace the front passenger air bag at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A software error causes the eCall emergency system's date and time to be incorrect, which may result in an inaccurate vehicle location being sent during an emergency call.
What the fix does
Mercedes-Benz will send a remote software update to your vehicle. Dealers will verify the update worked or install a new communication module software at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The passenger front air bag inflator may explode due to propellant breaking down after prolonged exposure to high humidity, heat, and temperature changes.
What the fix does
Dealers will replace the passenger front air bag module at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The driver's airbag may deploy unexpectedly if the steering components lack proper grounding and the airbag clockspring is broken, allowing electrostatic discharge to trigger deployment.
What the fix does
Dealers will add grounding to the steering components to prevent electrostatic discharge from triggering the airbag.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Control unit software may be incorrect, potentially preventing airbags from deploying properly during a crash.
What the fix does
Dealers will update the control unit software at no cost to restore proper airbag deployment function.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The electric power steering control unit may have defective solder connections that could cause the power steering system to stop working while you're driving.
What the fix does
Dealers will replace the electric power steering control unit at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel feed line has a single flare fitting instead of a double flare fitting, which can cause fuel leaks.
What the fix does
Dealers will install the correct fuel line with a double flare fitting at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A rubber seal at the back of the engine bay may stick to the hood when opened, then fall into the engine bay when the hood closes.
What the fix does
Dealers will attach four additional retaining clips to the rubber seal to keep it secure.
Summarized — see the official notice for exact wording, dates, and contacts.