AI Damage2014 Mercedes-Benz E 350: common problems
Owners of the 2014 Mercedes-Benz E 350 filed 278 complaints with NHTSA, most often about air bags and service brakes. Details by component below, with sources.
Key figures
- Owner complaints
- 278
- involving a crash
- 10
What fails most often
- 1 Air bags 18% of all complaints
- 2 Service brakes 18% of all complaints
- 3 Electrical system 14% of all complaints
- 4 Suspension 11% of all complaints
- 5 Steering 10% of all complaints
- 6 Structure 9% of all complaints
- 7 Fuel/propulsion system 9% of all complaints
- 8 Engine 7% of all complaints
- Air bags: 49 complaints (18% of all), 4 of them with a crash reported by the owner.
- Service brakes: 49 complaints (18% of all), 1 of them with a crash reported by the owner.
- Electrical system: 38 complaints (14% of all), 1 of them with a crash reported by the owner.
- Suspension: 30 complaints (11% of all), 2 of them with a crash reported by the owner.
- Steering: 27 complaints (10% of all), 2 of them with a crash reported by the owner.
Symptoms owners describe
How many of the 278 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Air bags | 49 | 4 | 0 |
| Service brakes | 49 | 1 | 0 |
| Electrical system | 38 | 1 | 0 |
| Suspension | 30 | 2 | 0 |
| Steering | 27 | 2 | 0 |
| Structure | 25 | 1 | 0 |
| Fuel/propulsion system | 24 | 1 | 0 |
| Engine | 20 | 1 | 0 |
| Powertrain | 15 | 2 | 0 |
| Fuel system | 13 | 1 | 0 |
| Wheels | 11 | 0 | 0 |
| Seats | 8 | 0 | 0 |
| Tires | 8 | 0 | 0 |
| Electronic stability control | 6 | 1 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Each time a speaker in a door, while driving, has began to squeal, sputter and the smoke. The first occurred while sitting inside a car wash, with the windows up, obviously. I was able to open the window, drenching myself, but venting the acrid electrical smoke. The second was while driving home from a medical clinic.
The air bags did not deploy. There were no warning indicators illuminated. The vehicle was totaled and towed from the scene. The contact and passenger suffered injuries that required medical attention. A police report was filed. The vehicle was not diagnosed. The dealer and manufacturer were made aware of the failure.
For a couple of months when I put my 2014 e350 sport in park it would jerk forward. Never really thought about it being a problem. I was driving my car into my neighbors driveway and went to turn around and just as I went to put the car in reverse, the car propelled forward directly into her tree.
The air bags failed to deploy. The contact sustained head, eye, and neck injuries that required medical attention. A police report was filed. The vehicle was towed and not repaired. The manufacturer was notified of the failure. The failure mileage was not available. Updated 06/20/16 updated 05/29/18
The contact stated that the brake pedal was spongy while depressed, with the "Brake System" and "Low Brake Fluid" warning lights displayed. The vehicle was taken to a dealer, and the brake fluid was topped off; however, the failure reoccurred in less than 24 hours, and the same warning lights were displayed on the…
We had the car inspected at a local shop and the left rear tie rod link was completely severed from the suspension sub-frame because of rust. The brake lines above the sub frame were also severely rusted and leaking.
Rear subframe rotted / corroded. Rear brake lines rotted and rear springs broken from corrosion . Mercedes refuses to address the issues under warranty except the subframe issue . Almost crashed on i-84 with child in vehicle due to rear control arm being rotted from subframe .
The mechanic determined that the rear subframe has severe rust and corrosion. The rusted rear subframe is available for inspection upon request. Despite the alignment and inspection of the suspension and brakes, the unsafe braking behavior remains.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,458 of 36,656 model years in the NHTSA data (top 4% most complained about).
On average one model year of the E 350 has 96 complaints (23 years in the data). This year has 278, above average.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
Other years of this model
- E 350 20037 sources
- E 350 200410 sources
- E 350 200515 sources
- E 350 2006400 sources
- E 350 2007350 sources
- E 350 2008173 sources
- E 350 200964 sources
- E 350 2010184 sources
- E 350 2011223 sources
- E 350 2012217 sources
- E 350 2013164 sources
- E 350 201531 sources
- E 350 2016135 sources
- E 350 2017104 sources
- E 350 2020225 sources
- E 350 2021226 sources
- E 350 2022161 sources
- E 350 2023148 sources
- E 350 2024168 sources
- E 350 2025175 sources
- E 350 202683 sources
- E 350 20277 sources
Questions and answers
What are the most common problems with the 2014 Mercedes-Benz E 350?
Owner complaints to NHTSA most often mention: air bags, service brakes, electrical system. Total complaints: 278. The most frequent symptoms in complaint texts: rust, corrosion (23%), smoke, burning smell, fire (11%), warning lights, check engine (11%).
How many service bulletins (TSB) were issued for the 2014 Mercedes-Benz E 350?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2014 Mercedes-Benz E 350 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2014 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.