6.9

fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
9,062 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2015 Mercedes-Benz C300:

Unsubscribe any time. We don't sell/share your email.

problem #8

Oct 102021

C300

  • miles
There wasn-€™t any warning lamps prior to my rear right tire exploding on highway.

- Snellville , GA, USA

problem #7

Feb 282019

C300

  • miles
Suspension parts are rusting out fast I don't live in a salted road for black ice type of environment car only has 66K miles and ac pours fuel odors in the cabin interior materials are bubbling up fast even after uv treatments.

- El Paso, TX, USA

problem #6

Nov 082020

C300

  • miles
Every time I start my car it smells like gas and it's so strong to the point where it gives me headaches. Also I was on the freeway and the roads were wet from previous rain and I almost died and hydroplaned on the freeway. Even if it's a small bit of rain my car starts shaking as if I don't have control. I do not feel safe in this car and I just got the car a month ago.

- Houston, TX, USA

problem #5

Apr 032018

C300

  • 27,000 miles
Back driver side seat belt hard to engage and will come unengaged without prompting. Brake pads wear out every 30,000 miles back passenger side tire and valve has been replaced 4 times in less than 70,000 miles and still looses air intermittently. Car can be parked or moving. No consistency in when or amount air pressure is lost.

- Mason, TN, USA

problem #4

Feb 252017

C300

  • 21,000 miles
I was driving 580-E and merging onto I-5 S when I hit a humongous pot hole with my left font tire causing it to immediately blow out. That in-turn caused my stability tracking to engage, which caused me to slow down drastically. That caused another vehicle to near miss ramming me in the back and me side swiping another vehicle. I was driving approximately 70 mph and almost lost control of the vehicle and had to immediately pull over to a very narrow shoulder of the road with my emergency flashers blinking. To ensure the safety of the vehicle, my self and other passengers in the car, I had to drive approximately 0.5 miles to the next exit (67) to safely get my vehicle off the road to a safe location. I then called a tow truck to tow my vehicle back to santa rosa where I live to get the tire replaced and front bump repaired. I am unsure of the cause of the unsafe condition of the highway or what caused the pot hole. There were several cars stranded with damages to their vehicles as well. One person came to the same exit (food mart on patterson road) with a blown out tire as well. I have her contact information if you need to contact her.

- Santa Rosa, CA, USA

problem #3

Oct 012016

C300

  • 23,500 miles
I heard a very big devastating noise while driving my 2015 Mercedes Benz-C300 on a local road in raleigh, nc at about 40 mph. Since I did not see any TPMS (tire pressure monitoring system) or any other kind of alert on the screen, I continued to drive. After driving about 2 more miles, I heard another big pop and the car became non-drivable by then. I did not feel hitting any object or going thru a pot hole. That's when I got down the car and noticed the right front tire outer wall got separated from the tire and the the tire was just flat to the ground. I could not, of course, drive further. This happened on Saturday (10/1/16) evening and it is a run-flat tire, but could not drive further and there was no spare in the car. So, I had to wait until today (10/3/16) to get it towed to the nearest Benz dealer in raleigh to get the tire replaced. It was a very frustrating half a day attending to this repair. There are a couple of issues here. (a) quality issue: Why the Continental tire tire gave away so quickly with only about 23.5K miles on the odometer, without hitting any object? (B) safety issue: This would have been a disaster if I were on a road trip with family on a national highway, especially, on a Saturday evening without a spare tire. (C). System response issue: Why mb system did not give any kind of alert in spite this major blow-out? I would hesitate to buy another car without a spare tire. I hope the NHTSA will consider seriously discouraging run-flat tires in the cars unless a spare tire is provided, until such time the run-flats are extremely safe and sturdy. Thanks.

- Raleigh, NJ, USA

problem #2

Jun 152016

C300

  • miles
The mandatory required tire pressure motoring system (because it has run flat tires) on one of the wheels failed and they claimed this is not covered by either the manufacturer's warranty or the tire protection warrantee. I was told this on 6/15 2015 but the original complaint I made about air pressure int he left rear tire was well within the warrantee period.

- Ashland, MA, USA

problem #1

Mar 312015

C300

  • 1,000 miles
Vibration at high speed around 70 M/H. vibration during warm up after a cold start. Noise coming out from unknown parts possibly suspension when running over bumps at low speed around 7 M/H.

- Houston, TX, USA