Most common 2007 Mercedes-Benz CLS550 problems
Share of the 35 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz CLS550 complaints by model year
Best CLS550 years: 2006, 2010, 2015. Years to avoid: 2007, 2012. Compare all years →
2007 Mercedes-Benz CLS550 recalls (4)
Visibility › Sun/moon roof assembly
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please see the recall report for a complete list of models and model years. The glass sunroof panel may not be properly secured and can detach.
Remedy: Dealers will inspect and replace the sunroof panel as necessary, free of charge. Owner notification letters were mailed January 10, 2025. Owners may contact MBUSA customer service at 1-800-367-6372.
Visibility › Sun/moon roof assembly
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The glass sunroof panel may not be properly secured and may detach.
Remedy: Dealers will inspect and replace the sunroof panel as necessary free of charge. Owner notification letters were mailed February 3, 2023. Owners may contact MBUSA customer service at 1-800-367-6372.
Visibility › Sun/moon roof assembly
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2007 C350, C230, C280, CLK350, E320CDI, E350 Wagon, E350, 2006 C55 AMG, CLK500, CLS500, CLS55 AMG, E500 Wagon, E500, E55 AMG, 2007 CLK550, CLS550, CLS63 AMG, E550, E63 AMG, and E63 Wagon AMG vehicles.
Remedy: MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. Owner letters were mailed May 7, 2021.
Visibility › Sun/moon roof assembly
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2001-2011 vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly resulting in the glass panel detaching from the vehicle. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V918-4126.pdf
Remedy: MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. The recall began July 10, 2020.
What 2007 Mercedes-Benz CLS550 owners say
Fuel & propulsion system all 24 →
The fuel tank has a leak from a defect in the plastic, and my local Mercedes dealership is unwilling to honor the Warranty Coverage Extension that covered fuel tank components to replace the fuel tank.
Note that the vehicle on has 43,733 miles - cabin interior strong live fuel fumes - constant gas fumes on the inside of the car cabin. Note that the car was stationary at my residence parking. I did not know where were the fumes coming from at the time. Got a headache just for the moment I was trying to determined where were the fumes coming from. This is currently for all drivers and owners a very hazardous dangerous condition to all extremes, very high risk from ignition from static or electrical, due to wire hardness in the area. Vehicle was towed and took it to Mercedes Benz dealer and found the following: leakage in fuel system. Replaced fuel tank fuel tank drain/fill observed accident prevention regulation "12 wl08" fuel tank and fuel for storagebring observe accident prevention regulation "12 wl08" performed by Mercedes-Benz of new orleans. …
Transmission & drivetrain
Driving highway speeds and suddenly vehicle jerked and losses all power. Engine revs but doesn't move. This can be a very dangerous situation. Transmission went into 'limp' mode and check engine light lit. Many other Mercedes owners reporting same problem with the 722.9 transmission valvebody, conductor plate, and/or TCM. This should be investigated as countless other people are reporting this same issue for several years now.
Defective internal speed sensor does not send signal to TCM(transmission control module) causing loss of power while moving. The only way to get car going again is to shut off car and restart hoping it will reset. If this were to happen in construction zone with nowhere to pull over, May be deadly.
Engine & cooling
Bought this certified CLS550 from keyes european Mercedes in van nuys,ca on 11/23/2009 with 42000 miles as soon as I got the car home I noticed the fan was overly loud and my temperature gauge was reading 110. Called dealership they said fan motor on these cars are all extremely loud and temp. Sounded okay. Two weeks later I was driving when I was alerted to turn off engine immediately due to car seriously overheating. Dealer said it was the thermostat bad on car. Also been having trouble with the transmission since I bought car. Keep in mind I have only had it for about 47 days now. The same time thermostat was replaced they said a component in the transmission was bad and replaced it. Have had my car back for 4 days now and the transmission no longer slips, but is jerking hard into beginning gears. Will be taking car back to be checked again!
Catastrophic failure with sudden loss of power and inability to proceed at more than 20 MPH. It has now recurred twice and vehicle flatbedded to agency. Has been in shop for six days with no repair. Service manager denies that this is the second failure because his diagnostics were unable to determine the problem the first time.
2007 Mercedes-Benz CLS550 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.5L 8-cyl | 7-speed automatic | RWD | 14 / 20 / 16 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2007 Mercedes-Benz CLS550 a good car?
Based on 35 owner complaints filed with NHTSA, the 2007 CLS550 rates avoid: 4.7× as many complaints as a typical year of the CLS550 at the same age. It is one of the CLS550 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 CLS550?
The fuel & propulsion system — 24 complaints, 69% of all complaints for this model year. Next are the transmission & drivetrain (4) and engine & cooling (3).
How many recalls does the 2007 Mercedes-Benz CLS550 have?
There are 4 recalls for the 2007 Mercedes-Benz CLS550, the most recent from November 19, 2024 (sun/moon roof assembly). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz CLS550?
The best years by complaints, compared at the same age, are 2006, 2010 and 2015. Years to avoid or approach with caution: 2007 and 2012. See the full Mercedes-Benz CLS550 years comparison.
At what mileage do 2007 Mercedes-Benz CLS550 problems happen?
The median mileage reported in complaints is about 59,000 miles; 34% 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.