Vehicle Data Hub

2014 Mercedes-Benz C300 problems

NHTSA has received 120 complaints about the 2014 Mercedes-Benz C300, and 44% of them involve air bags. Next are steering (11%) and suspension (9%).

At a glance

Complaints
120 filed with NHTSA
Most reported
Air bags 44% of complaints
Crashes and fires
7 and 0
Injuries and deaths
5 and 0
Typical mileage
35,000 miles 28 complaints with mileage

Source: NHTSA owner complaints

Where the complaints are

Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.

  • Air bags 44%
  • Steering 11%
  • Suspension 9%
  • Body & structure 8%
  • Electrical system 8%
  • Cruise control 3%
  • Brakes 2%
  • Engine 2%
  • Seats 2%
  • Wheels 2%

When problems show up

Complaints by mileage, 2014 Mercedes-Benz C300 Complaints by odometer reading in 20,000-mile steps. The median is about 35,000 miles. 0k to 20k miles: 9 complaints 20k to 40k miles: 6 complaints 40k to 60k miles: 8 complaints 60k to 80k miles: 3 complaints 80k to 100k miles: 0 complaints 100k to 120k miles: 0 complaints 120k to 140k miles: 0 complaints 140k to 160k miles: 2 complaints 160k to 180k miles: 0 complaints 180k to 200k miles: 0 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 35,000 miles
Based on 28 complaints that include mileage. 82% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles9
20k to 40k miles6
40k to 60k miles8
60k to 80k miles3
80k to 100k miles0
100k to 120k miles0
120k to 140k miles0
140k to 160k miles2
160k to 180k miles0
180k to 200k miles0
200k+ miles0

What the data shows

Of the 28 complaints that include odometer readings, half describe a problem before roughly 35,000 miles.

Safety-related details: 7 complaints mention a crash; 5 injuries reported.

Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2014 ranks 11th most-complained-about out of 15 model years of the Mercedes-Benz C300 with enough data (66 complaints in that window). It is also covered by 5 safety recall campaigns.

What owners wrote

A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.

Tl* 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 stated that along with his wife who was in the car at the time, she was injured along with one other occupant of one of the other vehicles. It was unknown where the wife was seated.

Reported at 34,366 miles, February 2019 CrashInjury

Tl* 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 legs, and a fracture on the eye socket. The contact received medical attention. A police report was filed. The vehicle was towed to the contact's insurance company.

Reported at 11,000 miles, April 2015 CrashInjury

While in motion (driving) another driver turned in front of me, causing me to t-bone her (police report with description attached). I slammed on brakes to to lessen the unavoidable impact. I estimate my speed at 30-35 MPH. My airbags failed to deploy. My car was totaled, as was the other driver I hit. I had 2 spiral metacarpal fractures in my left hand from hitting the steering wheel that required surgical placement of two plates and 12 screws, and my knees hit the dash board, my right hip bruised from seatbelt,I…

Reported at 40,000 miles, October 2017 CrashInjury

I was stopped in front of my garage (waiting for the door to go up). When I lightly pressed on the gas pedal to pull in, the engine roared and the car suddenly leaped forward at a very high rate of speed, going thru my detached garage wall. The accelerator pedal stuck and I could not get the car to stop. I have pulled into this garage thousands of times and knew this was the car. Slamming on the brakes could not stop the car because it was accelerating too quickly.

Reported at 45,785 miles, April 2018 Crash

Tl* 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. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was approximately 51,500.

Reported at 51,500 miles, August 2018

Other model years of the C300

Best and worst years for the Mercedes-Benz C300