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SuspensionPart report

2008 Mercedes-Benz C300 Suspension Problems

Complaints
12about this part
Share
2%of 672 total for the year
Median mileage
103,839miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the suspension of the 2008 Mercedes-Benz C300, 2% of the 672 complaints for this model year. Where a mileage was given, the median is 103,839 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Stepped on the brakes and the car veered sharply to the right. Vehicle felt very unstable. Would of been horrible if the surface was snow covered or icy. Took into a repair facility and found out the rear subframe has rusted to the point of failure. The rear tire could move several inches. Somebody could be killed or severely injured.”

NHTSA complaint #11398791, filed 2021-03, 105,000 miles

“Failure of rear subframe at passenger side connection to the lower thrust arm/trailing link that transmits force from wheel carrier to car frame. The bracket portion of the rear subframe for this connection tore loose at the weld to the carrier, possibly during moderate acceleration at an at-grade railroad crossing in downtown St Paul, MN. This occurred on 8/12/21 at roughly 4:15 in the afternoon. The car became difficult to drive and control, requiring the steering wheel to be turned slightly to the right and held there while the car was going straight. …”

NHTSA complaint #11429522, filed 2021-08, 120,000 miles

“My car has a rotten rear subframe and has holes in it and the dealer doesn't want to repair it and Mercedes announced that it had a 20 year extended warranty. I'm from Manchester, New Hampshire. They inspected it and say they can't change it for free. The warranty doesn't cover it. I don't know what's going on. with that”

NHTSA complaint #11554672, filed 2023-11

“My rear suspension, right lower control arm I believe it's called. Snapped out of the subframe do to corrosion . My hole rear subframe is getting worse, eating up by corrosion”

NHTSA complaint #11570202, filed 2024-02

“Car was inspected by Mercedes Benz of St. Paul (MN). The rear subframe of the car was corroded (inside out) and the crossmember became disjointed from the rear subframe. I could have been in an accident while driving my C300 with a corroded out rear subframe. I was extremely lucky not to be in an accident while I was driving my C300 with a major defect like corroded rear subframe that caused crossmember to become disjointed from the rear subframe. I was lucky enough to avoid serious injury to myself and/or someone else if the rear subframe had collapsed due to unexpected corrosion. …”

NHTSA complaint #11502002, filed 2023-01

Related service bulletins

Suspension: other model years

YearComplaintsShare of year
201721%
201631%
2015226%
20141112%
20136726%
20126926%
20116013%
2010266%
2009366%
2008122%

Other parts of the 2008 Mercedes-Benz C300

Air bags
270 complaints
Electrical system
228 complaints
Steering
136 complaints
Exterior lighting
108 complaints
Other or unknown
38 complaints
Engine
31 complaints
Seat belts
22 complaints
Brakes
17 complaints
Electronic stability control
17 complaints
Transmission and drivetrain
16 complaints
Body and structure
9 complaints
Vehicle speed control
8 complaints

← All problems reported for the 2008 Mercedes-Benz C300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology