2014 Mercedes-Benz C204.9 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2014 Mercedes-Benz C204.9, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical325.0%
- Steering325.0%
- Driver assistance216.7%
- Airbags18.3%
- Engine18.3%
- Fuel system18.3%
- Body & structure18.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
THE ANTI THEFT SYSTEM FAILED AFTER 59,000 MILES, LOCKE THE STEERING WHEEL AND WON'T ALLOW THE CAR TO START. MERCEDES CHARGES 1,800 DOLLARS TO REPLACE IT.. NEEDS TO BE RECALLED VERY DANGEROUS.
I CAN'T BELIEVE I EXPERIENCED THAT .. MY CAR ALL OF THE SUDDEN JERKED ON THE FREEWAY AND STARTED SHAKING . I SERIOUSLY THOUGHT WE HAD AN EARTHQUAKE .. THEN IT ACCELERATED AND THE NEXT THING YOU KNOW I'M GOING 25 MILES AND HOUR .. SO GLAD I WAS NEAR AN EXIT I PUT THE CAR IN NEUTRAL ROLLED DOWN THE HILL , MADE A TURN AND SHUT IT OFF .TOOK ME A MINUTE TO GATHER MYSELF .. WHAT IF I WAS IN A MIDDLE LANE ? WHAT IF SOMEONE COULDN'T PRESS THE BREAKS IN TIME🤦🏻‍♀️🤯😡...
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
STEERING WHEEL WILL NOT GO UP OR DOWN
I CAN'T BELIEVE I EXPERIENCED THAT .. MY CAR ALL OF THE SUDDEN JERKED ON THE FREEWAY AND STARTED SHAKING . I SERIOUSLY THOUGHT WE HAD AN EARTHQUAKE .. THEN IT ACCELERATED AND THE NEXT THING YOU KNOW I'M GOING 25 MILES AND HOUR .. SO GLAD I WAS NEAR AN EXIT I PUT THE CAR IN NEUTRAL ROLLED DOWN THE HILL , MADE A TURN AND SHUT IT OFF .TOOK ME A MINUTE TO GATHER MYSELF .. WHAT IF I WAS IN A MIDDLE LANE ? WHAT IF SOMEONE COULDN'T PRESS THE BREAKS IN TIME🤦🏻‍♀️🤯😡...
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
SUDDEN LOSS OF POWER WHILE TRYING TO ACCELERATE,ENGINE LIGHT COMES ON AND CAR GOES INTO LIMP MODE. CODE P002. CAR HAS 44450 MILES.
I CAN'T BELIEVE I EXPERIENCED THAT .. MY CAR ALL OF THE SUDDEN JERKED ON THE FREEWAY AND STARTED SHAKING . I SERIOUSLY THOUGHT WE HAD AN EARTHQUAKE .. THEN IT ACCELERATED AND THE NEXT THING YOU KNOW I'M GOING 25 MILES AND HOUR .. SO GLAD I WAS NEAR AN EXIT I PUT THE CAR IN NEUTRAL ROLLED DOWN THE HILL , MADE A TURN AND SHUT IT OFF .TOOK ME A MINUTE TO GATHER MYSELF .. WHAT IF I WAS IN A MIDDLE LANE ? WHAT IF SOMEONE COULDN'T PRESS THE BREAKS IN TIME🤦🏻‍♀️🤯😡...
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
THE COMPANY HAS NOT BEEN ABLE TO FIX THE AIRBAGS OF MY CAR BECAUSE OF THE PART IS NOT AVAILABLE IN THE LOCAL DEALERSHIP. THIS IS MY SECOND COMPLAIN TO THE NHTSA. MY FIRST WAS IN 2018. IT IS SAD THAT A SAFETY ISSUE BY THE COMPANY IS NOT BEEN TAKEN CARE BY THE COMPANY EVEN AFTER 2 YEARS.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
2 CAMSHAFT ADJUSTERS REPLACED AT 104,000 MILES. SOME FAIL EVERY 50-60,000 MILES. WORK DONE AT HOEHN MERCEDES. BEFORE REPAIR - SLOW CRANK AT START, SOME SMOKE WHEN ENGINE STARTING, CHECK ENGINE LIGHT CAME ON. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
SUDDEN LOSS OF POWER WHILE TRYING TO ACCELERATE,ENGINE LIGHT COMES ON AND CAR GOES INTO LIMP MODE. CODE P002. CAR HAS 44450 MILES.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
THERE IS A GLASS ROOF PANEL BETWEEN THE WINDSHIELD AND THE SUNROOF. THIS GLASS PANEL IS EXTREMELY BRITTLE AND SHATTERS EASILY. THIS IS MY SECOND TIME HAVING TO REPLACE THIS GLASS PANEL. IT IS A DEALER ONLY PART AND COSTS $960 PLUS $300 FOR INSTALLATION. THE COST OF THIS GLASS PANEL IS EXTREMELY HIGH. BOTH TIMES THIS GLASS PANEL SHATTERED, NOTHING HIT IT. IT APPEARS AS SMALL CRACKS AT FIRST AND THEN SPREADS. BECAUSE IT IS SO BRITTLE, IT EVENTUALLY SHATTERS. THERE IS A RECALL ON THIS SPECIFIC PART WITH OTHER MERCEDES MODELS BUT NOT THE C250 FOR UNKNOWN REASONS. PLEASE ASSIST.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .