2014 Mercedes-Benz C300: Recalls, Problems & MPG
Here are the deets on the 2014 Mercedes-Benz C300: 5 recalls, 94 owner complaints and up to 22 mpg combined.
Recalls
5 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Electrical, Airbags Vehicle recall #17V177000 · 2017 · 51 vehicles
What's wrong: 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.
Why it matters: 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.
The fix: Mbusa will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017.
Steering Vehicle recall #17V252000 · 2017 · 168 vehicles
What's wrong: 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.
Why it matters: A loss of steering can increase the risk of a crash.
The 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.
Airbags Vehicle recall #17V627000 · 2017 · 495,290 vehicles
What's wrong: 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…
Why it matters: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
The 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.
Airbags Vehicle recall #19V010000 · 2019 · 288,779 vehicles
What's wrong: " 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 glk250 bluetec 4matic…
Why it matters: An inflator explosion May result in sharp metal fragments striking the passenger or other occupants resulting in serious injury or death.
The fix: Mbusa will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. The recall began March 29, 2019.
Communication Vehicle recall #19V787000 · 2019 · 24,226 vehicles
What's wrong: 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
Why it matters: An inaccurate vehicle location May delay emergency responders, increasing the risk of injury.
The 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.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 5 injuries and 0 deaths were reported.
What owners describe
- Airbags (52): the most common themes are fails to deploy (3).
- Steering (13): the most common themes are steering problems (11).
- Suspension (11): the most common themes are rust / corrosion (8).
- Electrical (9): the most common themes are door / lock issues (6), electrical failure (3).
The 2014 Mercedes-Benz C300 has 94 owner complaints, ranking #9 of 9 C300 model years for complaints (well below the 386 average). Complaints peaked in 2019 (25 filed that year). The typical problem showed up when the car was about 5 years old, at a median of 27,000 miles. Neighboring years: 2013 (260 complaints, 6 recalls), 2015 (381 complaints, 11 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 3.5 L 6-cyl | Automatic 7-spd | 4-Wheel Drive | 19 | 28 | 22 | Premium |
| 3.5 L 6-cyl | Automatic 7-spd | 4-Wheel Drive | 19 | 26 | 22 | Premium or E85 |
| 3.5 L 6-cyl | Automatic 7-spd | 4-Wheel Drive | 20 | 27 | 22 | Premium |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2014 Mercedes-Benz C300.
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Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
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FAQ
Does the 2014 Mercedes-Benz C300 have any recalls?
Yes. NHTSA lists 5 vehicle recalls for the 2014 Mercedes-Benz C300. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2014 Mercedes-Benz C300 problems?
Owners have filed 94 complaints with NHTSA. The most-reported areas are airbags (52), steering (13), suspension (11).
What gas mileage does the 2014 Mercedes-Benz C300 get?
EPA ratings run up to 22 mpg combined (3.5 L, Automatic 7-spd), across 3 engine and transmission combos.
Where can I get a 2014 Mercedes-Benz C300 repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.