Most common 2006 Mercedes-Benz SLK280 problems
Share of the 18 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz SLK280 complaints by model year
What 2006 Mercedes-Benz SLK280 owners say
Air bags
Electrical system faulty. Front lowbeam headlight warning light on. Mechanic changed headlight bulb but it still did not work. After about a week the warning indicator went off and headlight worked. A few days went by and the indicator came on again. The low beam did not work. This time the left side marker lamp indicator came on and the bulb wasn't working. Before I could take it in for repair the side marker was working again. It goes off and on about every other month. Also, the indicator for one of the bulbs above my license plate goes on and off, but it says bulb malfunction. Now joining is the passenger side ABS light. Sometimes when I start the car the warning indicator on the instrument panel is illuminated but then goes off after I start the car several times, about a day or two. I never know which electrical component may not be working when I turn on the ignition switch. …
My car is a 2006 Mercedes Benz SLK280. The SRS light indicator turned on and stayed on.. The garage said the cost of repair of the SRS system would be over $400.00. I do not know if the restraint system / airbag will work if there is an accident, it May be a very hazardous condition if the Mercedes impact protection system is not working. Many other SLK280 owners have also complained about this problem.
Electrical system
Electrical system faulty. Front lowbeam headlight warning light on. Mechanic changed headlight bulb but it still did not work. After about a week the warning indicator went off and headlight worked. A few days went by and the indicator came on again. The low beam did not work. This time the left side marker lamp indicator came on and the bulb wasn't working. Before I could take it in for repair the side marker was working again. It goes off and on about every other month. Also, the indicator for one of the bulbs above my license plate goes on and off, but it says bulb malfunction. Now joining is the passenger side ABS light. Sometimes when I start the car the warning indicator on the instrument panel is illuminated but then goes off after I start the car several times, about a day or two. I never know which electrical component may not be working when I turn on the ignition switch. …
Headlight wires (Inside Housing) are frayed / melted. Can cause fire. I was replacing my bulb when I noticed the wires in the plug were completely stripped with no shielding. I traced it back to the connector and the wire shields were either frayed or completely gone
Engine & cooling
Driving on freeway... All of sudden car goes in low gear no warning has done this about 4 times. Twice almost rear ended. Took to shop was told it was valve body/ conductor plate issue that would have to be fixed at dealer due to a defective part mb used on this transmission. Car went into limp mode and would not go into gear. Valve body / conductor plate replacement
Tl* the contact owns a 2006 Mercedes Benz SLK280. The contact stated that the check engine warning indicator illuminated continuously. The dealer stated that the intake manifold needed to be replaced. The vehicle was not repaired. The manufacturer was not notified. The approximate failure mileage was 48,000.
2006 Mercedes-Benz SLK280 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl | 7-speed automatic | RWD | 18 / 25 / 21 |
| 3.0L 6-cyl | 6-speed manual | RWD | 17 / 25 / 20 |
EPA ratings. Class: Sports car.
Frequently asked questions
Is the 2006 Mercedes-Benz SLK280 a good car?
Based on 18 owner complaints filed with NHTSA, the 2006 SLK280 rates average: 1.2× as many complaints as a typical year of the SLK280 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 Mercedes-Benz SLK280?
The air bags — 6 complaints, 33% of all complaints for this model year. Next are the electrical system (4) and engine & cooling (3).
How many recalls does the 2006 Mercedes-Benz SLK280 have?
NHTSA lists no recalls for the 2006 Mercedes-Benz SLK280. You can still confirm with your VIN using our VIN recall check.
At what mileage do 2006 Mercedes-Benz SLK280 problems happen?
The median mileage reported in complaints is about 79,000 miles; 31% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.