NHTSA Complaint #11495617 — 2012 MERCEDES-BENZ C300

SUSPENSION issue reported to NHTSA

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Complaint Details

ODI Number	11495617
Vehicle	2012 MERCEDES-BENZ C300
Component	SUSPENSION
Date of Incident	October 28, 2022
Date Filed	December 1, 2022
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	IN

Consumer Description

Rear Sub Frame Assembly failure. It is available for inspection upon request. Vehicle rear end begins to wobble at speeds above 40 mph. The issue causes steering to become more complicated and the vehicle veers sharply while braking. This issue makes all C Class vehicles with this Sub Frame Assembly extremely unsafe, especially at highway speeds. Vehicle has been inspected by the authorized Mercedes Benz dealership in Indianapolis, IN. Service Advisor stated it's "amazing" that there hasn't been a recall issued yet. Based on this body style there have been roughly 320,000 of these C-Class vehicles sold. If the NHTSA truly cares about safety, they will launch an investigation into this matter. There are no warning lamps or messages that appear prior to this failure.

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Recent Complaints for the 2012 MERCEDES-BENZ C300

#11701264 — STRUCTURE:BODY — November 24, 2025 — Mercedes of Danbury replaced the rear sub frame CODE 3441 47, since my mechanic (Newtown Auto Repair) told me that th...

#11696118 — FUEL SYSTEM, GASOLINE — October 28, 2025 — The contact owns a 2012 Mercedes-Benz C300. The contact stated the fuel tank was emitting a fuel odor. The contact st...

#11682005 — STRUCTURE:BODY — August 20, 2025 — Rear subframe rotted out and broke due to corrosion. Rear crossmember is broken and needs replaced. My safety as wel...

#11682005 — UNKNOWN OR OTHER — August 20, 2025 — Rear subframe rotted out and broke due to corrosion. Rear crossmember is broken and needs replaced. My safety as wel...

#11673323 — AIR BAGS — July 14, 2025 — I was driving normally last week when the driver's head restraint system (known by Mercedes as Neck Pro) unexpectedly...