2014 Mercedes-Benz SLK250 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 SLK250, 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
- Body & structure150.0%
- Engine150.0%
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
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
MARS RED PAINT FAILURE-
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
THERE IS A PROBLEM WITH THE AIR TO AIR INTER-COOLER DESIGN THAT CAUSES WATER TO COLLECT AND THEN BE INGESTED INTO THE ENGINE UNDER SUDDEN ACCELERATION. THE INGESTION OF THE WATER CAUSES THE COMPUTER TO BELIEVE THERE IS AN ENGINE PROBLEM AND PUTS IT INTO "LIMP MODE"; SUDDENLY AND SEVERELY CUTTING POWER. WHEN THIS HAPPENS AT HIGHWAY SPEEDS (60/70 MPH), IN TRAFFIC, IT CAUSES SITUATIONS THAT ARE POTENTIALLY VERY DANGEROUS. THE PROBLEM IS EXACERBATED AT NIGHT AND/OR DURING BAD WEATHER WHERE VISIBILITY IS BAD AND ROAD CONTROL IS REDUCED. NOTE THAT THIS ONLY HAPPENS DURING VERY HUMID (RAINY/FOGGY/MISTY/..) WEATHER AND IT CAN TAKE TWO PLUS HOURS OF CONSTANT DRIVING, DEPENDING ON SPEED AND HUMIDITY, FOR WATER TO COLLECT TO A POINT WHERE THE PROBLEM CAN OCCUR. MERCEDES IS AWARE. A BULLETIN HAS BEEN ISSUED FOR THE SOUTH EAST US BUT NO FIX IS AVAILABLE OR PLANNED. THIS AFFECTS ALL R172 SLK250, FROM LATE 2012 THROUGH 2015. WE HAVE HAD THIS HAPPEN 3 TIMES OVER TWO YEARS (OCT/13, NOV/14, NOV/15) AND WE'VE ONLY RECENTLY DISCOVERED REASON FOR THE OCCURANCES. THE LAST TWO EVENTS WERE IN HEAVY TRAFFIC, IN RAIN, ON INTERSTATES, AT 65/70 MPH AND BOTH VERY NEARLY RESULTED IN ACCIDENTS. WE FEEL THAT THIS IS A SEROUS SAFETY PROBLEM AND SHOULD BE FIXED. WE HAVE TALKED TO OUR DEALER (VEHICLE WAS PURCHASED NEW) AND BASICALLY TOLD TO SELL/TRADE OR LIVE WITH IT. NOTE ALSO THAT THIS PROBLEM ALSO OCCURS ON SOME MERCEDES BENZ C300 MODELS FOR WHICH A 'HACK' HAS BEEN ISSUED. A HOLE, SIZE UNKNOWN BUT PROBABLY IN THE 2-4 MM RANGE, IS DRILLED IN THE LOW POINT IN THE INTER-COOLER ALLOWING THE WATER TO BE BLOWN OUT BY THE COMPRESSED AIR. THIS 'HACK' IS NOT AVAILABLE FOR THE SLK 250.
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 .