2009 Mercedes-benz Slk-class
The Verdict
The 2009 Mercedes-benz Slk-class has 3 owner complaints filed with NHTSA. The most reported issues are body (1 complaints) and brakes (1 complaints). With a Klunk Score of 100/100, it earns a "Smooth Ride" rating. If you're shopping for a Mercedes-benz Slk-class, consider the 2016 model year which has 33% fewer complaints.
Safe Bet
The 2016 has 33% fewer complaints
View the 2016 Mercedes-benz Slk-class dashboard →
Klunk Score: Smooth Ride
This vehicle year has significantly fewer complaints than average. A reliable choice.
How is this calculated?
The Klunk Score ranks this vehicle year against all others in our database based on total owner complaints filed with NHTSA. 100 = fewest complaints (top tier), 0 = most complained-about. Scores above 60 are better than average; below 40 means more problems than most.
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Under the Hood
Each number is a complaint. Darker = bigger problem.
By Category
By Severity
Worst Problems
Complaints
I WAS DRIVING DOWN AN INTERSTATE WHEN MY POWER STEERING AND AC WENT OUT AND A BATTERY WARNING MESSAGE APPEARED. SHORTLY AFTER, ANOTHER WARNING APPEARED SAYING TO TURN OFF ENGINE. I HAD TO STOP ON THE SIDE OF THE INTERSTATE AND ENDED UP HAVING TO BE TOWED. THEY DETERMINED I NEEDED A NEW COMPRESSOR, NEW PULLEYS, AND A NEW BELT. AFTER IT WAS "FIXED" THE AC STILL WOULDN'T TURN ON AND IT WAS DIAGNOSED AS A FRONT SAM CONSOLE ISSUE. I GOT THE SAM REPLACED AND THEN AFTER DRIVING ABOUT 30 MILES, MY CHECK ENGINE LIGHT CAME ON AND THE CAR STARTED SHAKING. MA 10/22/2015 UPDATED 11/27/2017*CN
ON 3/22/2012 WITHIN A FEW HUNDRED FEET OF LEAVING A DRIVEWAY, THE RIGHT WHEEL SLOWLY SEIZED (WITHIN 100 FEET), ABS AND ESC WARNINGS APPEARED AND THE CAR BECAME IMMOBILIZED. THE CAR WAS FLAT-BEDDED TO THE DEALER FOR REPAIR. THE RIGHT STEERING KNUCKLE AND RELATED WHEEL/PARTS WERE REPLACED. ON 6/23/2012 AT ABOUT 25 MPH, THE ABS, ESC WARNINGS SHOWED, THE CAR PULLED TO THE RIGHT ON BRAKING. THE CAR WAS PULLED OVER AND PARKED, AND AGAIN FLAT-BEDDED TO THE DEALER. THE LEFT STEERING KNUCKLE AND RELATED PARTS WERE REPLACED. IN SHORT, THE RIGHT STEERING KNUCKLE FAILED, AT LOW SPEED FORTUNATELY, AND THREE MONTHS LATER THE RIGHT FAILED IN THE SAME MANNER. HAD THESE FAILURES OCCURRED AT HIGHER SPEED, THEY WOULD HAVE PRESENTED A SERIOUS STEERING CONTROL PROBLEM. *TR
NOT A FAILURE, BUT I NOTICED A SIGNIFICANT LABELING DISCREPANCY ON MY 2009 MERCEDES BENZ SLK300. THE TIRE LABEL ON THE DRIVER'S DOOR INCORRECTLY LISTS THE OEM TIRE SIZE AS 205-55-16 FRONT AND 225-50-16 REAR. THE VEHICLE IN REALITY IS FITTED WITH 225-45-17 FRONT AND 245-40-17 REAR; THESE ARE NOT OPTIONAL TIRES/WHEELS EITHER - THEY ARE THE STANDARD SIZE AND WERE LISTED ON THE WINDOW STICKER AS SUCH. THEREFORE, IT IS ALSO NOT CLEAR TO ME IF THE SIZE DISCREPANCY ON THE LABEL ALSO MAY MEAN THAT THE LISTED TIRE PRESSURE DO OR DO NOT APPLY TO MY VEHICLE. *TR