MERCEDES-BENZ C · model year

2009 MERCEDES-BENZ C

21 NHTSA complaints, 4 crash reports for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2009MERCEDES-BENZC carries 21 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 4 crashes, 0 fires, 4 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2009 C is exterior lighting with 4 filings, followed by power train:automatic transmission (3) and electrical system (3). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 15 investigation files overlapping the 2009 C. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

21
Complaints
4
Crashes
0
Fires
4
Injuries
0
Deaths

Total Complaints

21 filings

Crashes Reported

4 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
EXTERIOR LIGHTING4
POWER TRAIN:AUTOMATIC TRANSMISSION3
ELECTRICAL SYSTEM3
STEERING2
EQUIPMENT ADAPTIVE/MOBILITY1
ELECTRONIC STABILITY CONTROL (ESC)1
SEAT BELTS1
AIR BAGS:SIDE/WINDOW1
SERVICE BRAKES, HYDRAULIC1
VISIBILITY1
ENGINE AND ENGINE COOLING:ENGINE1
SERVICE BRAKES1
POWER TRAIN1

Recent Complaints

20140210POWER TRAIN

AT 43,500 AND 54 MONTHS THE TRANSMISSION IN THE CAR HAD TO BE REPLACED. THE CAR HAS ALWAYS BEEN PROPERLY SERVICED AT THE MERCEDES DEALER. I BELIEVE THIS MODEL/MAKE HAS DEFECTS AS I HAVE BROUGHT IT BACK FOR SERVICE MANY TIMES. *TR

Mileage: 43,400

20140204EXTERIOR LIGHTING

THE WIRES WITHIN BOTH OF MY HEADLIGHTS OF MY 2009 MERCEDES C300 HAVE THEIR INSULATION SO DETERIORATED THAT THE WIRES ARE FULLY EXPOSED. THIS ISSUE CAUSES THE LIGHTS TO CUT IN AND OUT WITHOUT WARNING WHICH HAVE OCCURRED DURING HIGHWAYS SPEEDS AND OR RURAL AREAS IN PUERTO RICO. THIS DANGEROUS SITUATION IS NOT BEING TAKEN CARE OF BY THE MANUFACTURER WITH VARIOUS ATTEMPTS TRIED. *TR

Mileage: 49,000

20131219ELECTRICAL SYSTEM

LIGHTS IN THE BACK RIGHT PANEL ARE NOT WORKING.... GOT MESSAGE STATING THEY WERE OUT....CHECKED THEM AND ELECTRICAL CONNECTION IS BURNED AND LOOKS LIKE WIRES ARE FRIED. *TR

Mileage: 4,850,000

20131219EXTERIOR LIGHTING

LIGHTS IN THE BACK RIGHT PANEL ARE NOT WORKING.... GOT MESSAGE STATING THEY WERE OUT....CHECKED THEM AND ELECTRICAL CONNECTION IS BURNED AND LOOKS LIKE WIRES ARE FRIED. *TR

Mileage: 4,850,000

20131112SERVICE BRAKES

DIM LEFT STOP LIGHT. MELTED PLUG. MERCEDES BENZ C300 2009 W204. *TR

Mileage: 71,000

20131112EXTERIOR LIGHTING

DIM LEFT STOP LIGHT. MELTED PLUG. MERCEDES BENZ C300 2009 W204. *TR

Mileage: 71,000

20130716ELECTRICAL SYSTEM

THE REAR TAIL LIGHTS ON MY MB C350 SHOWS SIGNS OF A BURNING/MELTING ON THE CONNECTOR. I INITIALLY RECEIVED A NOTICE ON MY DASH THAT THE RIGHT REAR BULB WAS BAD AND NOT WORKING. I CHECKED THE CONNECTORS AND IT SHOWED SIGNS OF MELTING/BURNING. AFTER ADJUSTING THE WIRES, THE LIGHTS WOULD WORK UNTIL THE CAR WOULD HIT A BUMP AND I WOULD HAVE TO AGAIN RESET THE WIRES. *TR

20130716EXTERIOR LIGHTING

THE REAR TAIL LIGHTS ON MY MB C350 SHOWS SIGNS OF A BURNING/MELTING ON THE CONNECTOR. I INITIALLY RECEIVED A NOTICE ON MY DASH THAT THE RIGHT REAR BULB WAS BAD AND NOT WORKING. I CHECKED THE CONNECTORS AND IT SHOWED SIGNS OF MELTING/BURNING. AFTER ADJUSTING THE WIRES, THE LIGHTS WOULD WORK UNTIL THE CAR WOULD HIT A BUMP AND I WOULD HAVE TO AGAIN RESET THE WIRES. *TR

20100701POWER TRAIN:AUTOMATIC TRANSMISSION

TL*THE CONTACT OWNS A 2009 MERCEDES C350. THE CONTACT STATED THAT WHEN THE ACCELERATOR PEDAL WAS ENGAGED, THE TRANSMISSION SURGED FORWARD AT A HIGH RATE. THE FAILURE OCCURRED INTERMITTENTLY. THE DEALER WAS UNABLE TO DUPLICATE OR DIAGNOSE THE FAILURE. THE FAILURE MILEAGE WAS 15 AND THE CURRENT MILEAGE WAS 32000.

Mileage: 15

20100223POWER TRAIN:AUTOMATIC TRANSMISSION

TL*THE CONTACT OWNS A 2009 MERCEDES BENZ C300. WHENEVER THE CONTACT PLACED THE VEHICLE INTO REVERSE OR DRIVE I WOULD VIOLENTLY SWITCH INTO GEAR CAUSING THE VEHICLE TO SLIGHTLY SURGE FORWARD. THE VEHICLE HAS BEEN TAKEN TO THE DEALERSHIP ON THIRTEEN DIFFERENT OCCASIONS WHERE SEVERAL DIFFERENT PARTS HAVE BEEN SERVICED ON THE TRANSMISSION;HOWEVER THE CONTACT IS STILL EXPERIENCING THE FAILURE. THE CONTACT HAS NOTICED THE FAILURE SINCE THE VEHICLE WAS PURCHASED. THE CURRENT AND FAILURE MILEAGES WERE 14000.

Mileage: 14,000

20091024ENGINE AND ENGINE COOLING:ENGINE

BOUGHT A NEW 2009 C300 MERCEDES AT A DEALER IN SAN DIEGO. CAR HAS ROUGH IDLE AND SHAKES FOR 30 SECONDS IN THE MORNING. DEALER CHECKED AND FOUND NOTHING WRONG. THEY ARE BLAMING IT ON STRICT EMISSION ISSUES AS THE SOURCE OF THE ROUGH IDLE. HOOD DOES NOT LATCH UNLESS SLAMMED HARD. DEALER CLAIMED THEY HAD ADJUSTED LATCH BUT STILL THE SAME. *TR

Mileage: 1,400

20090906VISIBILITY

I PURCHASED A C300 IN APRIL 2009, WITHIN A FEW DAYS I NOTICED A CRACK IN THE DRIVER SIDEVIEW MIRROR. I TOOK THE CAR TO THE DEALERSHIP AND THE SALESMAN THAT SOLD ME THE CAR TOOK CARE OF ARRANGING THE REPAIR. THEY HAD TO ORDER THE MIRROR AND GAVE ME A LOANER. I WAS NEVER GIVEN AN EXPLANATION AS TO WHAT CAUSED THE CRACK. *TR

Mileage: 450

20090604SERVICE BRAKES, HYDRAULIC

TL*THE CONTACT OWNS A 2009 MERCEDES BENZ C300. THE CONTACT STATED THAT THE VEHICLE WAS EXPERIENCING SEVERAL COMPUTER DEFECTS. WHILE PARKED ON A HILL AND ATTEMPTING TO PLACE THE GEAR SHIFTER INTO REVERSE, THE VEHICLE WOULD ROLL FORWARD INSTEAD OF BACKWARDS. THE VEHICLE WOULD ROLL FORWARD APPROXIMATELY ONE FOOT AS IF IT WERE IN NEUTRAL. DURING THIS TIME, THE STEERING WOULD LOCK AND THE BRAKES WOULD LOSE POWER. IT WOULD TAKE TREMENDOUS FORCE TO DEPRESS THE BRAKE PEDAL AND STOP THE VEHICLE. THE DEALER AND MANUFACTURER COULD NOT ASSIST WITH THE REPAIRS. THERE WERE NO RECALLS AVAILABLE. THE DEALER COULD NOT DETERMINE THE CAUSE OF THE FAILURE. NO REPAIRS HAVE BEEN PERFORMED. THE VIN WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 7,000.

Mileage: 7,000

20090604POWER TRAIN:AUTOMATIC TRANSMISSION

TL*THE CONTACT OWNS A 2009 MERCEDES BENZ C300. THE CONTACT STATED THAT THE VEHICLE WAS EXPERIENCING SEVERAL COMPUTER DEFECTS. WHILE PARKED ON A HILL AND ATTEMPTING TO PLACE THE GEAR SHIFTER INTO REVERSE, THE VEHICLE WOULD ROLL FORWARD INSTEAD OF BACKWARDS. THE VEHICLE WOULD ROLL FORWARD APPROXIMATELY ONE FOOT AS IF IT WERE IN NEUTRAL. DURING THIS TIME, THE STEERING WOULD LOCK AND THE BRAKES WOULD LOSE POWER. IT WOULD TAKE TREMENDOUS FORCE TO DEPRESS THE BRAKE PEDAL AND STOP THE VEHICLE. THE DEALER AND MANUFACTURER COULD NOT ASSIST WITH THE REPAIRS. THERE WERE NO RECALLS AVAILABLE. THE DEALER COULD NOT DETERMINE THE CAUSE OF THE FAILURE. NO REPAIRS HAVE BEEN PERFORMED. THE VIN WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 7,000.

Mileage: 7,000

20090604ELECTRICAL SYSTEM

TL*THE CONTACT OWNS A 2009 MERCEDES BENZ C300. THE CONTACT STATED THAT THE VEHICLE WAS EXPERIENCING SEVERAL COMPUTER DEFECTS. WHILE PARKED ON A HILL AND ATTEMPTING TO PLACE THE GEAR SHIFTER INTO REVERSE, THE VEHICLE WOULD ROLL FORWARD INSTEAD OF BACKWARDS. THE VEHICLE WOULD ROLL FORWARD APPROXIMATELY ONE FOOT AS IF IT WERE IN NEUTRAL. DURING THIS TIME, THE STEERING WOULD LOCK AND THE BRAKES WOULD LOSE POWER. IT WOULD TAKE TREMENDOUS FORCE TO DEPRESS THE BRAKE PEDAL AND STOP THE VEHICLE. THE DEALER AND MANUFACTURER COULD NOT ASSIST WITH THE REPAIRS. THERE WERE NO RECALLS AVAILABLE. THE DEALER COULD NOT DETERMINE THE CAUSE OF THE FAILURE. NO REPAIRS HAVE BEEN PERFORMED. THE VIN WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 7,000.

Mileage: 7,000

20090517CrashAIR BAGS:SIDE/WINDOW

MY DAUGHTER WAS IN A CRASH TODAY ON MAY 16, 2009 SHE WAS DRIVING MERCEDES 2009 C300 AND SHE SAID THAT THE STEERING WHEEL LOCK SUDDENLY BEFORE SHE CRASH, SHE WAS DRIVING ONLY AT 15MPH THAT WHY THE IMPACT WAS NOT SO SEVERE, WE ARE VERY LUCKY THAT SHE JUST HAS MINOR INJURIES. *TR

Mileage: 10,000

20090517CrashSTEERING

MY DAUGHTER WAS IN A CRASH TODAY ON MAY 16, 2009 SHE WAS DRIVING MERCEDES 2009 C300 AND SHE SAID THAT THE STEERING WHEEL LOCK SUDDENLY BEFORE SHE CRASH, SHE WAS DRIVING ONLY AT 15MPH THAT WHY THE IMPACT WAS NOT SO SEVERE, WE ARE VERY LUCKY THAT SHE JUST HAS MINOR INJURIES. *TR

Mileage: 10,000

20090211STEERING

I BOUGHT A NEW 2009 MB C300 FOR MY WIFE LAST NOVEMBER, LESS THAN THREE MONTH LATER, ITS POWER STEERING QUITTED TO WORK WITHOUT ANY MALFUNCTION SIGN. IT WILL TAKE A PROFESSIONAL WRESTLER TO GET IN AND OUT ITS PARKING PLACE. THIS IS NOT THE WORST PART YET. AFTER NUMEROUS FAILED ATTEMPTS TRYING TO CONTACT THE SERVICE DEPARTMENT OF MY DEALER, I DROVE THE CAR TO THE DEALER THAT IS 40 MILES AWAY FROM MY HOUSE. ONLY THING THEY DID TO THE CAR WAS THAT A SERVICE REPRESENTATIVE OPENED THE HOOD AND ADDED SOME FLUID, WHICH LATE TURNED OUT TO BE USELESS. HE WANTED ME TO SET A SERVICE APPOINTMENT THAT WAS 15 DAYS LATER. I WAITED ALMOST TWO HOURS TRYING TO GET SOMEBODY TO TEST DRIVE MY CAR AND TELL ME IF IT'S SAFE TO DRIVE, WHICH THEY NEVER DID. RIGHT NOW, THE ONLY THING I CAN DO IS TO LOOK AT MY WORLD RENOWNED LUXURY SEDAN C300 MADE BY SUPERIOR GERMAN TECHNOLOGY SITTING IN MY CAR POT. WHAT A JOKE! *TR

Mileage: 1,400

20090206CrashELECTRONIC STABILITY CONTROL (ESC)

I WAS INVOLVED IN A CRASH WHERE I WAS RUN OFF THE ROAD AND INTO A CENTER MEDIAN STEEL BARRIER. MY MERCEDES C300 IS EQUIPPED WITH ELECTRONIC STABILITY PROGRAM (ESP) AND ACTIVE SEATBELT RESTRAINTS (BOTH OF WHICH FAILED IN THE CRASH). THE ROADS WERE SLICK, HOWEVER, WHEN A CAR SWERVED OVER ON ME AND I ATTEMPTED TO HIT THE BRAKES TO AVOID BEING HIT, MY CAR BEGAN TO FISH-TAIL AND I LOST CONTROL OF THE VEHICLE. AT THE TIME, A WARNING LIGHT CAME ON INDICATING (POST-CRASH) THAT MY ESP MALFUNCTIONED. IN ADDITION, UPON IMPACT, MY SEAT RESTRAINED ME, HOWEVER, WHEN THE CAR BOUNCED BACK INTO THE CENTER OF THE HIGHWAY, THE SEATBELT CAME COMPLETELY DETACHED FROM WHERE IT'S HOLDER (WHERE YOU CLICK IT IN). THE REST OF THE SAFETY FEATURES WORKED (AIRBAGS, ACTIVE HEAD-REST RESTRAINTS, STEEL FRAMING, ETC.) HOWEVER, IF THE ESP FAILED OR MALFUNCTION, THEN THERE WAS NO POSSIBLE WAY TO PREVENT THE ACCIDENT BASED ON THE VEHICLES FAILURE TO DELIVER IN A PANICKED SITUATION. THE MERCEDES ESP PROGRAM IS SUPPOSE TO

Mileage: 3,500

20090206CrashSEAT BELTS

I WAS INVOLVED IN A CRASH WHERE I WAS RUN OFF THE ROAD AND INTO A CENTER MEDIAN STEEL BARRIER. MY MERCEDES C300 IS EQUIPPED WITH ELECTRONIC STABILITY PROGRAM (ESP) AND ACTIVE SEATBELT RESTRAINTS (BOTH OF WHICH FAILED IN THE CRASH). THE ROADS WERE SLICK, HOWEVER, WHEN A CAR SWERVED OVER ON ME AND I ATTEMPTED TO HIT THE BRAKES TO AVOID BEING HIT, MY CAR BEGAN TO FISH-TAIL AND I LOST CONTROL OF THE VEHICLE. AT THE TIME, A WARNING LIGHT CAME ON INDICATING (POST-CRASH) THAT MY ESP MALFUNCTIONED. IN ADDITION, UPON IMPACT, MY SEAT RESTRAINED ME, HOWEVER, WHEN THE CAR BOUNCED BACK INTO THE CENTER OF THE HIGHWAY, THE SEATBELT CAME COMPLETELY DETACHED FROM WHERE IT'S HOLDER (WHERE YOU CLICK IT IN). THE REST OF THE SAFETY FEATURES WORKED (AIRBAGS, ACTIVE HEAD-REST RESTRAINTS, STEEL FRAMING, ETC.) HOWEVER, IF THE ESP FAILED OR MALFUNCTION, THEN THERE WAS NO POSSIBLE WAY TO PREVENT THE ACCIDENT BASED ON THE VEHICLES FAILURE TO DELIVER IN A PANICKED SITUATION. THE MERCEDES ESP PROGRAM IS SUPPOSE TO

Mileage: 3,500

Compare 2009MERCEDES-BENZC to Similar Vehicles

NHTSA Investigations

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Frequently Asked Questions

How many complaints does the 2009 MERCEDES-BENZ C have?
The 2009 MERCEDES-BENZ C has 21 NHTSA complaints, 4 crashes, 0 fires, 4 injuries, and 0 deaths reported.
What are the most common problems with the 2009 MERCEDES-BENZ C?
The most-complained component for the 2009 MERCEDES-BENZ C is EXTERIOR LIGHTING with 4 complaints. Other frequently reported areas include POWER TRAIN:AUTOMATIC TRANSMISSION and ELECTRICAL SYSTEM.
Is the 2009 MERCEDES-BENZ C safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.