Print this page

10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
19,571 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Mercedes-Benz C300 fuel system problems

fuel system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2012 Mercedes-Benz C300:

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

2012 Mercedes-Benz C300 Owner Comments

problem #7

Oct 012022

C300

  • miles

A D V E R T I S E M E N T S

Car is leaking gas very dangers. I contact Mercedes dealer regarding the recall on this type of Mercedes i have and they said only vehicles manufactured from April 18, 2011, through July 12, 2011. Mine was before or after, and they refuse to give me the exactly date for my car manufacturer. Car I use for Uber, and i don-€™t have any other income. If someone just through away a cigarette in parking lot might cause a big problem in the building and others cars in parking

- Peoria, IL, USA

problem #6

Oct 022022

C300

  • miles
My Mercedes 2012 C 300 is leaking gas which may lead to fire ( the fuel filter flange when operated in high temperatures

- Peoria, IL, USA

problem #5

Jul 152022

C300

  • miles
My car smell like a gas leak. I had went to a car shop to have the car to looked at. The mechanic had told me that the fuel filter flange is leaking gas.

- Phoenix , AZ, USA

problem #4

Sep 022021

C300

  • miles

A D V E R T I S E M E N T S

The rear drivers side had a loud chunking/clanking noise while driving and the vehicle was unable to control and break when in motion. Driving was impossible as the breaking component was a total failure and car could not be controlled while traveling down 45-50mph zone. I reduced my speed to 20-25 mph by letting off on the gas to get better control of the car if breaking would need to be suddenly made. I relied on the shoulder to pull off if any sudden breaking was needed. The car was immediately take to be reviewed by a specialized Mercedes benz mechanic and further inspection proved that the rear subframe on the driver-€™s (left) side was corroded and broken. The connecting arms are rusted, corroded and rendered the car inoperative. I notified my insurance company as well as car manufacturers corporate office. I researched this issue further and discovered that this reoccurring issue with this make and model. There are a pheletera of recounting of this same issue on various message boards to validate the same issues and callouts I found. The car was taken to the dealership that it was purchased and further inspection showed that the left side subframe/ subframe arms were corroded with rust and broken. The brake lines and fuel tank were equally rusted and corroded. The service manager confirmed that this is defect of the car but it had been part of a recall. I had the car towed for 2nd opinion to another dealership service department to access the car and this callout further validated the corrosion and rust was wide spread and has rendered the car inoperable unless these damages were fixed.

- Voorhees, NJ, USA

problem #3

Aug 032020

C300

  • 92,000 miles
The rear subframe has corroded around the areas where the trailing arm and control arm meet the subframe on both sides of the vehicle, and has disintegrated around the drivers side rear trailing arm causing it to have detached, along with a piece of the subframe. The metal of the subframe is distorted around the area of the break. The detached trailing arm and piece of subframe are now making contact with the fuel tank as well. The fuel tank could have easily ruptured and ignited when this car was still in operation, as this car was driven for several days before the manufacturing defect was discovered. The failure happened when coming to a gentle stop from 20-30 miles per hour on a straight road. There was a loud snapping noise from the drivers side rear. This car had 92,000 miles at time of the structural failure and has been regularly serviced, exclusively at Mercedes-Benz. Mercedes-Benz usa customer service is unable to offer any assistance. This exact issue has led to a recall of the same model in Canada, and there are countless NHTSA reports describing similar structural failures. Mercedes-Benz usa is aware of this issue and is also aware that there is a recall in Canada, but has made it clear that goodwill will not be extended.

- Huntington, WV, USA

Search CarComplaints.com for these popular complaint phrases...

problem #2

Jan 082018

C300

  • miles
Feul tank leak when I put any amount of gas into car it is leaking out on to the ground while im driving and when im at a standstill. The smell is very strong and I see the trail in my rearview mirror. I read on the website that is one of the problems that this car is having it was reported March 2013 but when I call the dealership they are telling it is not a recall for this vehicle. I went to autozone to do a check and it told it was the feul capped which I switch and that was not the problem. Now I went to do my inspection and it failed due to this problem.

- Mount Vernon, NY, USA

problem #1

Feb 032015

C300

  • 45,000 miles
While my car was running in my driveway prior to driving, the engine caught fire, totaling the vehicle. There are no open recalls on this specific car, but was told by the fire investigator that it was either electrical or fuel pump related.

- Altamont, NY, USA

Not what you are looking for?