Total Complaints
3 filings
MERCEDES-BENZ SLK300 · model year
2009 MERCEDES-BENZ SLK300
3 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2009MERCEDES-BENZSLK300 carries 3 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2009 SLK300 is unknown or other with 1 filings, followed by steering (1) and electrical system (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2009 SLK300. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
3
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| UNKNOWN OR OTHER | 1 |
| STEERING | 1 |
| ELECTRICAL SYSTEM | 1 |
Recent Complaints
20150716UNKNOWN OR OTHER
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
Mileage: 80,000
20150716STEERING
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
Mileage: 80,000
20150716ELECTRICAL SYSTEM
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
Mileage: 80,000
Compare 2009MERCEDES-BENZSLK300 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 2009 MERCEDES-BENZ SLK300 have?▼
The 2009 MERCEDES-BENZ SLK300 has 3 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2009 MERCEDES-BENZ SLK300?▼
The most-complained component for the 2009 MERCEDES-BENZ SLK300 is UNKNOWN OR OTHER with 1 complaints. Other frequently reported areas include STEERING and ELECTRICAL SYSTEM.
Is the 2009 MERCEDES-BENZ SLK300 safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.