Most common 2007 Mercedes-Benz S550 problems
Share of the 54 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz S550 complaints by model year
Best S550 years: 2012, 2011, 2013. Years to avoid: 2015, 2007, 2016, 2014, 2017. Compare all years →
What 2007 Mercedes-Benz S550 owners say
Transmission & drivetrain
My 2007 mb S550 base model stalled as I was merging on to the expressway in heavy traffic. After sitting on side of the road for 20mins, I started the car and it was making a whining noise and when I accelerate the noise gets louder. I drove the car to the nearest Mercedes-Benz dealership. I was told that the transmission needs to be replaced. The car has been serviced with Mercedes and only has 100K miles. This will cost $7,800.00 the service guy stated that this should not be happening on this car but unfortunately he stated that he has seen this before.
Tl* the contact owns a 2007 Mercedes Benz S550. The contact stated that while driving at 45 MPH, the vehicle began to loose power and suddenly stalled without warning. The vehicle was taken to a dealer where it was diagnosed that the conductor plate and valve body failed and needed to be replaced. The vehicle was repaired but the failure recurred at 100,000 miles. The manufacturer was not notified of the failure. The failure mileage was approximately 67,000. The VIN was not available.
Engine & cooling
I brought a car from a car dealer in tampa Florida and when i got the car i noticed that the car would not pickup speed after pressing the gas pedal and it was asking me to turn off the engine or it will fail . also when i tried to put in coolant. I seen a milky substance that was coming out of the hoses and in the overflow tank of the coolant reservoir which indicates issues with the heads or head gasket . also the title i got says salvaged which i asked if there was anything wrong with the car and the car dealer told me no . never disclosing that the car has been salvaged . there are other issues with the car that i forget because of so many issues with the car that i cant keep up with and i want to return the car to the car dealer and get my money back and have tried but they refuse to make good on the sale
Tl* the contact owns a 2007 Mercedes-Benz S550. While driving 60 MPH, the odor of fumes emitted through the vehicle and made the contact nauseous. Medical attention was not received. The contact called olympia pre owned auto (1806 wake forest rd, raleigh, nc 27608, [phone]) and was informed that they would call her back. The vehicle was not taken to a Mercedes-Benz dealer or independent mechanic for diagnostic testing or repairs. The manufacturer was not made aware of the failure. The approximate failure mileage was 144,000.
Suspension
The contact owns a 2007 Mercedes-Benz S550. The contact stated that while driving 30-40 MPH, the vehicle started to decelerate independently. The contact also stated that he smelled an abnormal gasoline odor inside the vehicle. The contact veered to the side of the roadway. The contact stated that the vehicle failed to restart. The contact was able to restart the vehicle after 10 minutes. Additionally, the vehicle had failed to start on several occasions even though there was fuel in the tank. The vehicle was taken to an independent mechanic where an unknown diagnostic test was completed. Additionally, the contact stated that the front suspension was previously replaced but had failed again along with the rear suspension. The dealer and the manufacturer were not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 170,000.
The contact owns a 2007 Mercedes-Benz S550. The contact stated while driving at approximately 65 MPH, the vehicle was bouncing and pulling to the left and the right. The contact stated that the steering wheel was vibrating. The contact stated no warning lights were illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the front strut and radial knuckles needed to be replaced. The vehicle had not been repaired. The manufacturer had been informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 08V608000 (Suspension). The failure mileage was 131,989.
2007 Mercedes-Benz S550 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.5L 8-cyl | 7-speed automatic | RWD | 14 / 22 / 17 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2007 Mercedes-Benz S550 a good car?
Based on 54 owner complaints filed with NHTSA, the 2007 S550 rates avoid: 2.7× as many complaints as a typical year of the S550 at the same age. It is one of the S550 years we suggest avoiding. 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 2007 Mercedes-Benz S550?
The transmission & drivetrain — 13 complaints, 24% of all complaints for this model year, most often about automatic transmission. Next are the engine & cooling (12) and suspension (12).
How many recalls does the 2007 Mercedes-Benz S550 have?
NHTSA lists no recalls for the 2007 Mercedes-Benz S550. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Mercedes-Benz S550?
The best years by complaints, compared at the same age, are 2012, 2011 and 2013. Years to avoid or approach with caution: 2015, 2007, 2016, 2014 and 2017. See the full Mercedes-Benz S550 years comparison.
At what mileage do 2007 Mercedes-Benz S550 problems happen?
The median mileage reported in complaints is about 70,000 miles; 15% 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.