Print this page

NHTSA — Power Train Problems

2.7

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
55,200 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 drivetrain problems

drivetrain 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 #5

Feb 072024

C300

  • miles

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

vehicle sub-frame is cracked rusted corroded.

- Darien, IL, USA

Add Complaint
problem #4

Mar 202023

C300

  • miles
The left rear weld of the subframe on my 2012 C300 4matic has rotted through and appears to be a manufacture's part defect. I found out about this issue from a brake inspection and told it is a safety concern, which Mercedes Benzes is aware of but has no recalls for the defect.

- Rocky Hill, CT, USA

Add Complaint
problem #3

May 092022

C300

  • 88,000 miles
The contact owns a 2012 Mercedes-Benz C300. The contact stated that while the vehicle was receiving a routine maintenance, she was informed that the rear sub frame was rusted and had two holes. The vehicle was diagnosed that there was a transmission leak and the rear sub frame needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but no additional assistance was provided. The failure mileage was approximately 88,000.

- Chantilly, VA, USA

Add Complaint
problem #2

Dec 012018

C300

  • 135,000 miles
The contact owns a 2012 Mercedes Benz C300. The contact stated that when the vehicle was started and the accelerator pedal was depressed, the vehicle stalled without warning. The contact mentioned that the failure occurred periodically. The vehicle was taking to an independent mechanic where the failure could not be determined. Mercedes-Benz of alexandria (200 S pickett St, alexandria, va 22304 (703) 341-2100) and Mercedes-Benz of annapolis (324 6th St, annapolis, md 21403 (888) 261-7620) were contacted and informed the contact to bring the vehicle in for a diagnostic test. The vehicle was not taken to a dealer for a diagnostic test or repairs. The manufacturer was not made aware of the failure. The failure mileage was 135,000.

- Dunkirk, MD, USA

Add Complaint
problem #1

Jan 282017

C300

  • 53,000 miles
Gradually as the car is accelerating it makes a terrible grinding noise and shakes also jerks when changing gears, confirmed it is a failed transmission, the car has had all the appropriate maintenance just not at a mb dealer and there is a service bulletin on the transmission just not official recall and Mercedes is claiming no responsibility as it was not serviced at mb dealer since 2014. Clearly the service announcement is recognition of a problem

- Cranston, RI, USA

Add Complaint

Not what you are looking for?