2009 Mercedes-Benz SLK-Class problems
Light NHTSA footprint — 3 owner complaints. Either a clean record or thin data; we'll show what's there.
The 2009 Mercedes-Benz SLK-Class has 3 NHTSA owner complaints on file (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2006 SLK-Class | 34 | 0 |
| 2007 SLK-Class | 36 | 0 |
| 2008 SLK-Class | 14 | 0 |
| 2009 SLK-Class (this page) | 3 | 0 |
| 2012 SLK-Class | 11 | 0 |
Limited NHTSA data — only 3 complaints on file. The score reflects what's reported, but a small sample skews easily.
Only 3 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data.
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
What owners are saying recent NHTSA-filed complaints · verbatim
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…
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…
Common questions
Is the 2009 Mercedes-Benz SLK-Class reliable?
Limited NHTSA data. Only 3 owner complaints have been filed for the 2009 Mercedes-Benz SLK-Class, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2009 Mercedes-Benz SLK-Class?
Only 3 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data. We don't issue a buy/avoid verdict on the 2009 Mercedes-Benz SLK-Class without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What should I check before buying a used 2009 Mercedes-Benz SLK-Class?
There isn't enough NHTSA complaint data on the 2009 Mercedes-Benz SLK-Class to flag a standout failure pattern. Run the VIN for open recalls — those are free to fix regardless of warranty — get a standard pre-purchase inspection, and ask the seller for service records.
Is the 2009 Mercedes-Benz SLK-Class a good used car to buy?
Hard to say from federal data alone — only 3 owner complaints have been filed. Lean on the recall list above, a pre-purchase inspection, and a vehicle-history report on the specific VIN. Our data tells you what the model is known for; a history report tells you what that exact car has been through.
What's the most common problem on the 2009 Mercedes-Benz SLK-Class?
No problem area has crossed our reporting threshold yet, which is a good sign for this vehicle.
What's the most expensive thing that goes wrong?
Major repair items haven't been flagged often enough on this vehicle to single one out.
How do I check if my Mercedes-Benz SLK-Class has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2009 Mercedes-Benz SLK-Class?
Hard to say from NHTSA data alone with only 3 complaints on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.