Most common 2006 Mercedes-Benz S430 problems
Share of the 12 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz S430 complaints by model year
Best S430 years: 2000, 2002, 2005. Years to avoid: 2001. Compare all years →
What 2006 Mercedes-Benz S430 owners say
Electrical system
Engine compartment fire in 2006 S430 Mercedes-Benz ? January 16, 2014 as I accelerated to get on the road, I smelled a strange odor. I thought it was coming from a truck we passed. I opened the window & turned off the heater to clear the air in the car. In a few seconds, I closed the window and re-started the heater, which immediately filled the cabin with heavy smoke. I again stopped the heater and opened the window. The smoke cleared and smelled something burning. A few seconds later, I saw flames coming right out of the air duct grill in the hood. I pulled off I-275 between exits 63 and 65, on the right shoulder. I then hit the Mercedes sos button. My passenger dialed 911. When the mbrace operator came on the line, I said that I had an engine fire, but the cabin was filling with smoke. I opened the hood, I grabbed my phone and exited the car. At this point, started taking photos. …
Tl* the contact owns a 2006 Mercedes-Benz S430. While driving 40 MPH, the vehicle started to jerk and all the warning indicators illuminated and flickered on the instrument panel. The contact drove the vehicle home and it stalled. The vehicle failed to restart and the key failed to release from the ignition switch. The vehicle was taken to an independent mechanic where a diagnostic test was completed, but no failure code was found. The vehicle was not repaired. The vehicle was not taken to a dealer. The manufacturer was not notified of the failure. The approximate failure mileage was 134,000.
Speed control & acceleration
Tl contact owns a 2006 Mercedes Benz S430. The contact was driving approximately 60 MPH. A sudden increase in acceleration occurred without warning. The vehicle slowed down after several attempts. The vehicle was taken to an authorized dealer for inspection. The technician stated that the defect could possibly be transmission gear failure. Currently, the vehicle is under investigation by the manufacturers engineers. The cause of failure has not been determined at this time. The failure mileage was 113,000. Updated 04/16/10. Updated 4/23/10 the consumer stated his wife had an accident in the vehicle. The dealership admitted there was an acceleration and harsh shifting problem. Updated 05/12/10. Updated 06/24/10. Updated 09/07/10
Tl* the contact owns a 2006 Mercedes Benz S430. The contact stated that the vehicle suddenly accelerated on its own 1-2 times a week. It was an intermittent problem that resulted in another driver driving the vehicle running into a building; the driver was parking and while coasting, the vehicle suddenly lunged forward and accelerated. The driver was slightly injured. A police report was taken. The vehicle was taken to the dealership three times and the dealer told him that there was nothing wrong with the vehicle. The vehicle had not been repaired at the time of the complaint. The current mileage was approximately 140,000. The failure mileage was approximately 90,000- updated 4/23/10
2006 Mercedes-Benz S430 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 4.3L 8-cyl | 7-speed automatic | RWD | 16 / 24 / 19 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2006 Mercedes-Benz S430 a good car?
Based on 12 owner complaints filed with NHTSA, the 2006 S430 rates average: 1.4× as many complaints as a typical year of the S430 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 S430?
The electrical system — 6 complaints, 50% of all complaints for this model year, most often about instrument cluster/panel. Next are the speed control & acceleration (3) and transmission & drivetrain (2).
How many recalls does the 2006 Mercedes-Benz S430 have?
NHTSA lists no recalls for the 2006 Mercedes-Benz S430. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Mercedes-Benz S430?
The best years by complaints, compared at the same age, are 2000, 2002 and 2005. Years to avoid or approach with caution: 2001. See the full Mercedes-Benz S430 years comparison.
At what mileage do 2006 Mercedes-Benz S430 problems happen?
The median mileage reported in complaints is about 113,000 miles; 13% 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.