YearToAvoid

2011 Mercedes-Benz C300 Problems, Recalls & Reliability

Verdict

Avoid

Complaint Index

100/100

#1 most-complained of 16 C300 years

The 2011 Mercedes-Benz C300 has the worst complaint index (100) among all model years, ranking 1st worst out of 16 years tracked. Airbags are the top problem, cited in 250 of 480 complaints (52%), with 6 recalls filed.

Complaints
480
Recalls
6
Crashes / fires
15 / 6
Injuries / deaths
14 / 0
NHTSA overall rating
Not rated
EPA combined MPG
20
18 city / 25 hwy

Top 2011 Mercedes-Benz C300 problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Airbags250 (52%)
  2. Suspension, Wheels & Tires63 (13%)
  3. Electrical System58 (12%)
  4. Structure & Body53 (11%)
  5. Fuel System44 (9%)
  6. Steering34 (7%)
  7. Other33 (7%)
  8. Brakes14 (3%)
  9. Engine14 (3%)
  10. Transmission & Powertrain10 (2%)

What owners report

  • Airbags fail to deploy in front, side, or T-bone crashes, sometimes leading to injuries and totaled vehicles.
  • Tail light and headlight assemblies overheat, melt, or catch fire in the trunk or front end, in some cases spreading to the rest of the vehicle.
  • Owners report brake failure at low speed, including one case where brakes did not respond while entering a parking space.
  • The accelerator pedal has been described as surging or lurching the car forward unexpectedly while stopped, followed by unresponsive brakes.
  • A signal acquisition module has reportedly melted after producing a smoke odor while starting the vehicle.
  • Owners recall being told by dealers that they lacked parts or instructions to complete Takata airbag replacements despite a formal recall notice.
2011 Mercedes-Benz C300 complaints: complaints filed per quarter872011 Q32014 Q42016 Q32018 Q22020 Q12021 Q42023 Q32025 Q3
576 complaints filed with NHTSA from 2011 Q3 to 2026 Q2; peak 2017 Q4 (87).

2011 Mercedes-Benz C300 recalls

6 NHTSA recall campaigns list this model year.

  1. NHTSA 19V010000Jan 9, 2019Airbags288,779 vehicles

    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 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 GLK250 BlueTec 4Matic vehicles ever registered in the states of AZ, AR, DE, DC, IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV or "Zone B." MBUSA is also recalling certain 2012-2014 C250, E350 4Matic Coupe, SLS AMG Cabrio 2012-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, 2010-2011 C300, 2010-2014 C300 4Matic, C350, C63 AMG, E350 Coupe, 2011-2014 E350 Cabrio, SLS AMG Coupe, 2015-2016 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2016-2017 E550 Cabrio, 2010-2016 E550 Coupe, 2010-2015 GLK350 4Matic, GLK350 RWD, and 2013-2015 GLK250 BlueTec 4Matic vehicles ever registered in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MO, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI and WY or "Zone C." These vehicles are equipped with air bag inflators assembled as part of the passenger frontal air bag modules that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.

    Risk: An inflator explosion may result in sharp metal fragments striking the passenger or other occupants resulting in serious injury or death.

    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.

  2. NHTSA 17V177000Mar 14, 2017Electrical System51 vehicles

    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 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.

    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.

    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.

  3. NHTSA 16V363000May 26, 2016Airbags258,163 vehicles

    Air bags:frontal:passenger side:inflator module

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2008-2011 C300 Sedan, C300 4matic Sedan, C350 Sedan, C63 AMG Sedan vehicles, 2010-2011 GLK350, GLK350 4-Matic and E350 Coupe vehicles, 2011 SLS AMG, E350 Convertible, E550 Coupe and E550 Convertible vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above, MBUSA is recalling certain model year 2008 C300 Sedan, C350 Sedan, C63 AMG Sedan and C300 4-Matic Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Vehicles not originally sold or ever registered in either Zones A or B are not subject to this safety recall. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

    Risk: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.

    Remedy: MBUSA will notify owners, and dealers will replace the passenger frontal air bag modules, free of charge. Owners were sent an interim notification October 2016. A second notice will be mailed when remedy parts are available. Owners may contact MBUSA customer service at 1-877-496-3691.

See all 6 recalls for the 2011 Mercedes-Benz C300 →

2011 Mercedes-Benz C300 fuel economy and fuel cost

City
18 MPG
Highway
25 MPG
Combined
20 MPG
Annual fuel cost (EPA)
$4,000
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2011 compared with other C300 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2010Avoid93452621
2011Avoid100480620
2012Caution67266620
2013Caution60259622

All Mercedes-Benz C300 years: best and worst →

Frequently asked questions

Is the 2011 Mercedes-Benz C300 reliable?
Among C300 model years tracked by NHTSA, 2011 has the highest complaint index (100) and ranks 1st worst out of 16 years, earning an 'Avoid' verdict relative to other C300 years.
What is the biggest problem with the 2011 Mercedes-Benz C300?
Airbags are the top problem area, accounting for 250 of 480 complaints (52%), with a median failure mileage of 60,000 miles and 12 associated crashes.
Does the 2011 Mercedes-Benz C300 have a recall?
Yes, NHTSA lists 6 recalls for the 2011 C300, covering airbags, electrical system, and fuel system components, including a Takata airbag module replacement campaign.
How does the 2011 C300 compare to other years?
The 2011 C300 has the worst complaint index (100) of any year, worse than 2010 (93), 2015 (87), and much worse than 2021 (7) or 2024 (13), which rank among the best years.
What is the fuel economy of the 2011 Mercedes-Benz C300?
EPA rates the 2011 C300 at 20 mpg combined (18 city / 25 highway), with an estimated annual fuel cost of $4,000.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.