There are 3 owner-reported body & structure complaints for the 2009 Mercedes-Benz SL-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Yesterday 9/17/2022, while driving my 2009 Mercedes-Benz SL550 on the expressway with my wife as passenger, we heard and felt a very loud explosion. Shattered glass was entering the vehicle. I managed to pull off the expressway at the next exit. The retractable hardtop panoramic glass roof had exploded. Shattered glass fragments were all over the vehicle interior. Glass fragments also damaged the paint of the rear deck lid and spoiler of the vehicle. Fortunately, my wife and I did not suffer major injury. I called my auto insurance company and filed an auto damage claim. Since this incident was on a Saturday, the insurance adjuster would not contact me until the next business day. My auto was drive-able, I was still able to retract the convertible roof and the weather was nice for our 15 mile ride home.
MY CAR WAS PARKED AND I ATTEMPTED TO OPEN THE DRIVER'S DOOR AS I WAS SEATED IN DRIVER'S SEAT AND I HEARD A LOUD POPPING NOISE. THE DOOR LOCK MECHANISM HAS FAILED SUCH THAT THE DRIVER'S DOOR CAN NOT BE OPENED FROM THE INTERIOR WHICH PRESENTS A SERIOUS SAFETY ISSUE. DESPITE BEING COVERED BY AN EXTENDED A MERCEDES CPO WARRANTY MERCEDES REFUSES TO COVER THE COST OF THE REPAIR. THIS IS A WELL KNOWN ISSUE ACROSS MANY MERCEDES MODELS INCLUDING THE R230 SL550. PART OF THE DOOR HANDLE ACTUATION MECHANISM IS MADE OF FRAGILE PLASTIC AND, OR NYLON THAT WEARS PREMATURELY.
TL*THE CONTACT OWNS A 2009 MERCEDES SL500. THE CONTACT STATED THAT WHENEVER THE VEHICLE WAS PARKED IN SUNNY WEATHER, THE SHIFTER WOULD HEAT UP TO TEMPERATURES IN EXCESS OF 150 DEGREES MAKING IT DIFFICULT TO SAFELY OPERATE THE VEHICLE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALERSHIP WHERE THE CONTACT WAS TOLD THERE WAS NO SOLUTION TO THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 15,000. THE CURRENT MILEAGE WAS APPROXIMATELY 20,000. UPDATED 11/03/10 *BF UPDATED 11/04/10 THE CONSUMER STATED THE PROBLEM IS NOT ISOLATED. UPDATED EVOQ 11/09/10
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026