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2014 Mercedes-Benz C300 Problems and Recalls
Owners filed 94 complaints with NHTSA about the 2014 Mercedes-Benz C300, most often about the air bags (55% of complaints, typically around 27,000 miles). It is 9th of 17 C300 model years by number of complaints and has 5 recalls.
Most common 2014 Mercedes-Benz C300 problems
Air bags
52 complaints · 55%Half of these problems showed up before 27,000 miles. Parts named most often: frontal.
Takata recall - I received notification in october 2017 tk holdings inc.'s chapter 11 bankruptcy. This was the first notification that I received that my 2014 mercedes C300 had a recall. The manufacturer and dealer never provided one. I looked up on-line regarding the recall and discovered my car is affected. I had…
The contact owns a 2014 Mercedes-Benz C300. The contact received notification of NHTSA campaign number: 17v627000 (steering). The parts to do the repair were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair as the recall notice was received over a month…
Steering
13 complaints · 14%Half of these problems showed up before 47,500 miles.
The car was stationary and when trying to start the steering was locked and ignition would not start. The car had the steering locked and electronic ignition switch spontaneously corrupted and required replacement.
While driving on 95 highway taking an exit ( making a right turn roundabout) the steering wheel locked on me preventing me from continuing in the direction of the exit causing me to almost crash into the metal railings; because my wheels now where locked in a position that would force me to crash into the railings had…
Suspension
11 complaints · 12%R/f tire bubble in sidewall. At 1959 miles a bubble appeared in the r/f tire. I discovered the bubble while washing the car . This appeared about two month after purchase. August 19 20014 the dealer relunctantly replace the tire. I have not seen any bubbles since that date. I am not satisfied with the continental…
Electrical
9 complaints · 10%Parts named most often: ignition.
The contact owns a 2014 mercedes benz C300. The contact stated that while driving at unknown speed, the vehicle decelerated after the check engine and traction light illuminated. The vehicle was taken to the dealer. The technician diagnosed that the electronic module needed to be repaired. The vehicle was repaired.…
The car was stationary and when trying to start the steering was locked and ignition would not start. The car had the steering locked and electronic ignition switch spontaneously corrupted and required replacement.
Body and structure
9 complaints · 10%Parts named most often: body.
The contact owns a 2014 Mercedes-Benz C300. While the vehicle was stationary, the driver's door latch malfunctioned and the contact could not exit the vehicle. The contact rolled down the driver's window and used the exterior door handle to exit the vehicle. Mercedes-Benz of marion (2604 west deyoung street, marion…
Other or unspecified
8 complaints · 9%The vehicle was parked in a driveway and the trunk was opened when the rear window shattered for no apparent reason. The window was not struck. This occurred after a 200 mile highway trip with no issues. Obviously, if this had happened on the highway it could have been a difficult situation.
The inner driver door handle mechanism failed leaving me trapped in the vehicle. This is very unsafe. The car has 61k miles. This is a design flaw issue, not wear and tear.
Wheels and tires
3 complaints · 3%Parts named most often: rim.
Re: continental procontact (front) 225 45 r17 and (rear)245 40 17- on september 11, 2014 at 306 miles tire displayed bulge next to "c" of continental of front passenger side tire. The car was sitting for a week not being driven when the bulge appeared. I was not going to drive on a major highway and chance a blow out…
Speed control
3 complaints · 3%The contact owns a 2014 mercedes benz C300. When the ignition was turned to the on position and the vehicle was shifted into drive with the brake pedal depressed, the vehicle accelerated without warning. The vehicle crashed into a traffic light pole. The contact suffered lacerations to the head, muscle damage to the…
The contact owned a 2014 Mercedes-Benz c350. The contact stated that while driving at approximately 15-30 MPH, the vehicle independently accelerated. The contact stated that he was unaware of how his foot ended up under the accelerator pedal. The vehicle was then involved in a four vehicle collision. The contact…
Complaints are owner reports to NHTSA, not verified defects. One complaint can name several components, so shares add up to more than 100%.
2014 Mercedes-Benz C300 recalls
Infotainment and connectivity: communication
Risk: An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
Fix: 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. The recall began december 23, 2019. Owners may contact mbusa customer service at 1-800-367-6372. Mbusa's number for this recall is 2019120008.
Full defect summary
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. For a full list of the affected models visit: https://static.NHTSA.gov/odi/rcl/2019/rmisc-19v787-4620.pdf
Air bags: inflator module
Risk: An inflator explosion may result in sharp metal fragments striking the passenger or other occupants resulting in serious injury or death.
Fix: 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.
Full defect summary
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 coupe, 2014-2017 e550 cabrio, and 2014-2016 e550 coupe vehicles sold, or ever registered, in the states of al, ca, fl, ga, hi, la, ms, sc, tx, pr, as, gu, the mp, and vi or "zone a." additionally, mbusa is recalling certain 2012-2014 c250, e350 4matic coupe, sls amg cabrio, 2012-2015 c250 coupe, c350 4matic coupe, c350 coupe, c63 amg coupe, 2011 c300, 2011-2014 c300 4matic, c350, c63 amg, e350 cabrio, e350 coupe, sls amg coupe, 2015-2016 e400 4matic coupe, e400 cabrio, e400 coupe, 2011-2016 e550 cabrio, e550 coupe, 2011-2015 glk350 4matic, glk350 RWD, and 2013-2015 glk
Air bags: frontal
Risk: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
Fix: 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.
Full defect summary
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 coupe, glk250 4matic bluetec, glk350, glk350 4matic, 2016-2017 c350e, c43 amg, 2015 c400 4matic, 2016-2018 c63 amg, glc300, glc300 4matic, 2017-2018 c300 coupe, c300 4matic coupe, c43 amg, c63 amg coupe, c63s amg coupe, c300 cabriolet, c300 4matic cabriolet, c43 amg cabriolet, c63 amg cabriolet, c63s amg cabriolet, glc300 4matic coupe, glc43 amg, glc43 amg coupe, 2014 e350 coupe, e350 4matic coupe, e350 cabriolet, e400 hybrid, 2015-2017 e400 coupe, e400 4matic coupe, e400 cabriolet, 2014-2017 e550 coupe, e550 cabriolet, b250e, 2014-2016 e250 bluetec, e63 amg 4matic wago
Steering
Risk: A loss of steering can increase the risk of a crash.
Fix: Mbusa will notify owners, and dealers will inspect the steering coupling connecting bolt, tightening it as necessary, free of charge. The recall began may 2017. Owners may contact mbusa customer service at 1-800-367-6372.
Full defect summary
Mercedes-benz USA llc. (mbusa) is recalling certain 2013-2014 c250, c300 4matic, glk250 4matic bluetec and glk350 vehicles, 2013 c250 coupe, c350, c350 4matic coupe, c350 coupe and c63 amg coupe vehicles, and 2013-2015 glk350 4matic vehicles. The steering coupling connecting bolt may have been insufficiently tightened, possibly resulting in a loss of steering.
Electrical: software
Risk: If the air bags do not deploy as intended in the event of a crash, there would be an increased risk of injury in the event of a crash.
Fix: 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.
Full defect summary
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 sl550 vehicles, 2012 cls550 4matic vehicles, 2012-2016 e350 vehicles, 2016-2017 gl450 4matic vehicles, 2012-2014 ml350 4matic bluetec vehicles, 2015 s550, s550 4matic and c300 4matic sedan vehicles, 2015-2016 c300 sedan vehicles, and 2017 sl63 amg vehicles. Various control units on these vehicles may have been updated with incorrect software, potentially affecting the correct deployment of the air bags in the event of a crash.
Recall repairs are free at any franchised dealer. Enter your VIN at nhtsa.gov/recalls to see which recalls are still open on your car.
NHTSA defect investigations
Desiccated air bag inflator rupture
Summary
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. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 blomquist report at www.NHTSA.gov/sites/NHTSA.gov/files/documents/expert_report-hrblomquist.pdf.consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substa
Questions about the 2014 Mercedes-Benz C300
- What are the most common problems with the 2014 Mercedes-Benz C300?
- By NHTSA owner complaints: air bags (52 complaints, typically around 27,000 miles); steering (13 complaints, typically around 47,500 miles); suspension (11 complaints).
- How many recalls does the 2014 Mercedes-Benz C300 have?
- 5 recalls listed by NHTSA, the latest from November 1, 2019 (infotainment and connectivity). Check your VIN at nhtsa.gov/recalls to see which ones are still open on your car.
- Is the 2014 a bad year for the Mercedes-Benz C300?
- It is 9th of 17 C300 model years by number of complaints, with 94 complaints. Complaint counts are not adjusted for how many cars were sold, so popular years collect more of them, and the newest years have had less time to.