This page covers 5 recalls, 15 owner complaints and EPA fuel economy for the 2015 Mercedes-Benz E400.
23–25 mpg combined
9.4–10.2 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 3 tested variants for this model year.
The dominant complaint pattern for the 2015 Mercedes-Benz E400 centers on the airbag and restraint system, which accounts for nearly half of all filed complaints. Owners frequently describe airbag warning lights illuminating and concerns about whether the system would deploy correctly in a crash. Structural complaints, though fewer in number, include reports of subframe corrosion significant enough to require replacement, with some owners also noting corroded rear brake lines discovered during the same inspection. Engine-related complaints are limited, with one report describing an owner unable to use the vehicle due to fear of engine failure after being told a new engine was needed. A handful of isolated reports describe interior trim peeling, steering wheel material, window switches, and a blind spot monitoring system failing alongside turn signals on an extended drive.
15
Total Complaints
2
Crash-Related
1
With Injuries
By System
The 2015 Mercedes-Benz E400 has 5 recalls, the most serious involving a Takata-style passenger airbag inflator that can explode and send metal fragments into the cabin, posing a risk of serious injury or death.
A separate airbag concern applies to coupe models where an incorrect front passenger airbag may have been installed during a prior repair, meaning the bag may not deploy properly in a crash. On the steering side, a loose connection in the electric power steering control unit can cause the power assist to cut out, making the wheel significantly harder to turn and raising crash risk. There is also a fire risk: a rubber seal near the hood can fall into the engine compartment and contact hot exhaust components. Finally, a software fault in the emergency call system can report the wrong date, time, and vehicle location to emergency responders, which could delay help from reaching the right place 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.
What the fix does
Dealers will replace the front passenger air bag at no cost to you.
We may earn a commission for purchases made through these links.
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 →
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 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
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.
