Most common 2014 Mercedes-Benz E350 problems
Share of the 278 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz E350 complaints by model year
Best E350 years: 2017, 2015, 2020. Years to avoid: 2014, 2011, 2012, 2013, 2006. Compare all years →
2014 Mercedes-Benz E350 recalls (8)
Air bags › Frontal
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2015-2016 E400 Coupe, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2011-2014 E350 Coupe, and 2012-2014 E350 Cabrio vehicles. An incorrect front passenger air bag may have been installed during a prior repair.
Remedy: Dealers will replace the front passenger air bag on the affected vehicles, free of charge. Owner notification letters were mailed on September 10, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
Communication
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location.
Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge.
Air bags › Frontal › Passenger side › Inflator module
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014 C250, C300 4Matic, C350, C63 AMG, E350 4Matic Coupe, E350 Cabrio, E350 Coupe, SLS AMG Cabrio, SLS AMG Coupe, 2014-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, GLK 350, GLK250 BlueTec 4Matic, GLK350 RWD, 2015-2017 E400 4Matic Coupe, E400 Cabrio, E400…
Remedy: MBUSA will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. The recall began March 29, 2019. Owners may contact MBUSA customer service at 1-800-367-6372.
Air bags › Frontal
Mercedes-Benz USA, LLC. (MBUSA) is recalling these vehicles: 2014-2018 CLA250, CLA250 4Matic, CLA45 AMG 4Matic, 2015-2018 GLA250, GLA250 4Matic, GLA45 AMG 4Matic, C300 4Matic, C63S AMG, 2012-2014 C250, C350, C300 4Matic, E550 4Matic, 2013-2014 C63 AMG, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2013-2015 C350 4Matic…
Remedy: MBUSA will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017. Owners may contact MBUSA customer service at 1-877-496-3691.
Electrical system › Software
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and…
Remedy: MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
Steering › Electric power assist system
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2013-2015 SL550, 2013-2014 SL63 AMG, 2014-2016 E350, 2014 E350 Cabriolet, E350 Coupe, 2014-2015 S550, 2015 E350 Bluetec, 2015-2016 E400, 2016 E550 Coupe, and Maybach S600 vehicles manufactured August 23, 2012, to August 14, 2015.
Remedy: MBUSA will notify owners, and dealers will replace the electric power steering control unit, free of charge. The recall began October 13, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
Show 2 more recalls
Fuel system, gasoline › Delivery
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2014 E350 and E350 4Matic sedans manufactured June 4, 2014, to July 9, 2014. The affected vehicles were built with a fuel feed line that has a single flare fitting instead of a double flare fitting.
Remedy: MBUSA will notify owners, and dealers will install the correct fuel line, free of charge. This recall began on January 11, 2016. Owners may contact Mercedes-Benz customer service at 1-800-367-6372.
Structure › Body › Hood
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2013-2015 E350 Sedan, E350 4Matic Sedan, E350 4Matic Station Wagon, E400 Hybrid Sedan, CLS 550 CGI, and CLS550 4Matic, 2013-2014 E550 4Matic Sedan, 2013 E63 Sedan, E63 Station Wagon and CLS63, 2014-2015 CLS63 4Matic, E63 4Matic Sedan, E63 4Matic Sedan "S", and E63…
Remedy: MBUSA will notify owners, and dealers will attach four additional retaining clips to the rubber seal, free of charge. The recall began March 6, 2015. Owners may contact MBUSA customer service at 1-201-573-5339.
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2014 Mercedes-Benz E350:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
Rear brake line failure
On April 10, 2020, NHTSA's Office of Defects Investigation (ODI) received a defect petition from Mr. Surjit Singh alleging premature corrosion of the rear brake lines in his 2013 Mercedes-Benz E350 sedan. The petitioner states that he was recently informed by a Mercedes dealer service department that his car had severely rusted brake lines that need[ed] to be replaced immediately at a cost of about $3300.
What 2014 Mercedes-Benz E350 owners say
Brakes all 50 →
The contact owns a 2014 Mercedes-Benz E350. 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 instrument panel. The vehicle was taken back to the dealer, and the technician was informed that there appeared to be a brake leak. Upon inspection of the vehicle, the technician discovered that the subframe was severely corroded, which had caused the brake failure. The contact informed the dealer that there was a class action lawsuit for the failure. The dealer acknowledged that the failure was a known issue; however, no further assistance was provided. The manufacturer was not notified of the failure. The vehicle was repaired. …
Vehicle subframe corrosion (manufacturer extended warranty offered). Rear brake lines corroded/leaking. Vehicle leaks fuel; steel fuel line corroded. Vehicle has about 105k miles. Minor fire started when yard maintenance came in contact with fuel saturated ground where vehicle had been parked/moved out of the way just prior. With rear suspension subframe springs corroded, vehicle bottom can contact road surface while driving, scraping steel exhaust with fuel present. EXTREMELY dangerous. Local Sunbury Ohio Mercedes dealership inspected then offered subframe replacement. Stated it was leaking fuel and not hydraulic fluid we originally thought. Brake, suspension and fuel line corrosion repairs were quoted in excess of $4,000, which was a "great deal" according to them "because the subframe would already be removed and would make it much easier."
Air bags all 49 →
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. If the tree had not been there my car would have went into the front of her house. I am thankful that I am just shaken up and a little sore. I am also thankful that I was the only one in the car during this freak event and that if happened where it did because the 2 other times that I was in my car that day is was in heavy traffic and I would have done major damage to myself and possibly someone else. At first I believe my shoe got caught on the accelerator, but there is no possible way this could be the issue as I was applying it to the brake when the car propelled forward. …
Tl* the contact owned a 2014 Mercedes-Benz E350. While driving low speeds, the contact's vehicle was t-boned on the driver's side. 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. The failure mileage was 49,000 ... Consumer stated seat belt did not tighten driving the impact. Driver received head injury and broken bone in her left hand due to failure of airbags. Driver went the emergency room.
Electrical system all 38 →
I've had the car for 3 years and its all stock. It has 38,500 miles and today out of no where the driver side speaker in the door started making a crackling and popping noise. Smoke started coming from the speaker and filled the cabin. I quickly pulled over and turned off the car, because the smell of plastic burning was horrible. I was immediately alarmed by this and let the car cool down. I started driving again and it started again crackling and alot of smoke coming from the speaker. I called my mechanic and he said that that car had a known problem for a short and others had complained about their speakers melting due to overheating from the amplifier. He quickly searched the fuse box numbers and had me pull fuse #67 that disarmed the amp and speakers but allowed me to drive the car again. There is no warning and this is extremely dangerous due to a possible car fire. …
There have been three events, all the same. 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 third was while driving on the interstate, traveling from my mothers funeral in California to Wisconsin It was 2am, just outside of Vail, Colorado in the rain. My wife was driving, while I slept. I woke to her screaming that the car was on fire, she pulled over, taking advantage of the antilock brakes for the first time ever, striking some type of curb, ultimately not killing us, but we lost another speaker, and a tire and rim. …
2014 Mercedes-Benz E350 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.5L 6-cyl | 7-speed automatic | RWD | 20 / 30 / 24 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2014 Mercedes-Benz E350 a good car?
Based on 278 owner complaints filed with NHTSA, the 2014 E350 rates avoid: 2.6× as many complaints as a typical year of the E350 at the same age. It is one of the E350 years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2014 Mercedes-Benz E350?
The brakes — 50 complaints, 18% of all complaints for this model year, most often about foundation components › hoses, lines/piping, and fittings. Next are the air bags (49) and electrical system (38).
How many recalls does the 2014 Mercedes-Benz E350 have?
There are 8 recalls for the 2014 Mercedes-Benz E350, the most recent from August 13, 2021 (frontal). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz E350?
The best years by complaints, compared at the same age, are 2017, 2015 and 2020. Years to avoid or approach with caution: 2014, 2011, 2012, 2013 and 2006. See the full Mercedes-Benz E350 years comparison.
At what mileage do 2014 Mercedes-Benz E350 problems happen?
The median mileage reported in complaints is about 47,000 miles; 52% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.