Total Complaints
3 filings
MERCEDES-BENZ SLK · model year
2006 MERCEDES-BENZ SLK
3 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2006MERCEDES-BENZSLK 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 2006 SLK is power train with 2 filings, followed by vehicle speed control (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 2006 SLK. 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 |
|---|---|
| POWER TRAIN | 2 |
| VEHICLE SPEED CONTROL | 1 |
Recent Complaints
20130528VEHICLE SPEED CONTROL
THE CAR WENT INTO "LIMP HOME MODE" TWICE WHILE I WAS DRIVING DURING THE PAST FEW MONTHS. THE SECOND TIME IT HAPPENED ON THE HIGH WAY: GEARSHIFTS NO LONGER POSSIBLE AND THE CAR WAS GOING ABOUT 20 MILES PER HOUR. IT WAS PRODUCING VERY LOUD NOISE AND SCARY. A COLLISION COULD HAVE HAPPENED. AFTER SOME RESEARCH ONLINE AND TALKING TO MY MECHANIC, MERCEDES-BENZ'S 722.9 TRANSMISSION IS A KNOWN AND WIDESPREAD PROBLEM. MY MECHANIC HAD TO REPLACE THE TRANSMISSION VALVE BODY. ACCORDING TO MY RESEARCH ONLINE AND WHAT MY MECHANIC TOLD ME, MOST MERCEDES BETWEEN 2006 AND 2010 HAD THIS PROBLEM. THERE SHOULD HAVE BEEN A RECALL FOR THIS. *TR
Mileage: 23,000
20130528POWER TRAIN
THE CAR WENT INTO "LIMP HOME MODE" TWICE WHILE I WAS DRIVING DURING THE PAST FEW MONTHS. THE SECOND TIME IT HAPPENED ON THE HIGH WAY: GEARSHIFTS NO LONGER POSSIBLE AND THE CAR WAS GOING ABOUT 20 MILES PER HOUR. IT WAS PRODUCING VERY LOUD NOISE AND SCARY. A COLLISION COULD HAVE HAPPENED. AFTER SOME RESEARCH ONLINE AND TALKING TO MY MECHANIC, MERCEDES-BENZ'S 722.9 TRANSMISSION IS A KNOWN AND WIDESPREAD PROBLEM. MY MECHANIC HAD TO REPLACE THE TRANSMISSION VALVE BODY. ACCORDING TO MY RESEARCH ONLINE AND WHAT MY MECHANIC TOLD ME, MOST MERCEDES BETWEEN 2006 AND 2010 HAD THIS PROBLEM. THERE SHOULD HAVE BEEN A RECALL FOR THIS. *TR
Mileage: 23,000
20120321POWER TRAIN
THE TRANSMISSION LOCKS UP INTERMITTENTLY & WON'T UP SHIFT. THE TRANSMISSION WILL SUDDENLY GO INTO LOW GEAR WHILE DRIVING ON THE HIGHWAY. THIS IS A VERY DANGEROUS SITUATION AND MERCEDES-BENZ SAYS THEY DON'T HAVE A PROBLEM WITH THE TRANSMISSION. A INDEPENDENT MERCEDES-BENZ REPAIR SHOP SAID THIS IS A COMMON PROBLEM THAT ALL THE 7 SPEED TRANSMISSIONS ARE DOING. MERCEDES-BENZ WILL NOT PAY FOR THE REPAIR AND THEY SAY THEY WON'T SELL THE INTERNAL TRANSMISSION PARTS TO INDEPENDENT SERVICE PROVIDERS. THEY FORCE THE CUSTOMER TO GO TO THEIR AUTHORIZED DEALER AND PAY FOR THE REPAIR. THIS IS WRONG! *JS
Mileage: 43,202
Compare 2006MERCEDES-BENZSLK to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 2006 MERCEDES-BENZ SLK have?▼
The 2006 MERCEDES-BENZ SLK has 3 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2006 MERCEDES-BENZ SLK?▼
The most-complained component for the 2006 MERCEDES-BENZ SLK is POWER TRAIN with 2 complaints. Other frequently reported areas include VEHICLE SPEED CONTROL.
Is the 2006 MERCEDES-BENZ SLK 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.