Most common 2006 Mercedes-Benz CLK350 problems
Share of the 37 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz CLK350 complaints by model year
Best CLK350 years: 2009, 2008. Years to avoid: 2006, 2007. Compare all years →
2006 Mercedes-Benz CLK350 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 2006 Mercedes-Benz CLK350 owners say
Engine & cooling
I've just bought the car and it has only 70k, the engine doesn't want to go, it stalls but there is no check engine light on, I'll be driving and the car will just die, or start to diminish, and gas consumption , now all my lights fail, high beams, low beams, turn signals, Brake lights one after another, so I go to auto zone to purchase lights and one of the associates comes to help me, he stares that all the we ires are exposed,
Mercedes Benz vehicles manufactured between 2004 & 2007 & equipped with Mercedes' m272 have a faulty balance shaft which was not properly anealed, causing premature wear. The subject engines were manufactured with defective gears in their balance shafts. These defective gears wear out prematurely, excessively, and can cause damage to other expensive engine components without warning. Repair requires removal of the engine and was quoted at $7000-$8000 by the Mercedes Benz dealer. Most other import shops do not want to even attempt the repair due to the complexity and special tools required. A class action lawsuit was settled on this issue several years ago (we were never even notified) but only those who had the issue at the time could take advantage of the settlement's discounted repair costs (it was a terrible settlement!). …
Fuel & propulsion system
On December 9, 2016 I took my 2006 Mercedes-Benz CLK350 to the dealership because of a strong odor of gasoline coming from the back seat area. The dealership found the fuel smell was coming from the left rear fuel sending unit leaking. Although I was aware of the extended warranty agreement between Mercedes-Benz and NHTSA covering leaking gas tank components on Mercedes-Benz cars, I was informed by the dealership that the agreement did not include gas tank leaks on my clk vehicle, despite the fact that the same gas tank leak was covered on other Mercedes-Benz vehicles. Thus, I had to pay for the expensive repair out of pocket. I am requesting that NHTSA amend your prior agreement with Mercedes-Benz to include additional models such as my 2006 clk 350 which have developed similar leaks in their fuel tank components.
I first thought someone had been stealing my gas until my car started to smell like gas. If I give someone a ride in my car, they make comments about the smell as soon as I start to drive. My coworkers have noticed the odor in when they pass by my car in the parking lot and the spots that it leaves on the ground. I took my car to the mechanic and he said my fuel pump is leaking on to the top of my fuel tank at an excessive rate and is not safe to drive. My car only has 84,000 miles so I did some research on recalls. Mercedes has extended warranties on several models from 2006-2009 but mine is not on the list. My car has the same problems as the other vehicles effected. What can I do next?
Electrical system
I've just bought the car and it has only 70k, the engine doesn't want to go, it stalls but there is no check engine light on, I'll be driving and the car will just die, or start to diminish, and gas consumption , now all my lights fail, high beams, low beams, turn signals, Brake lights one after another, so I go to auto zone to purchase lights and one of the associates comes to help me, he stares that all the we ires are exposed,
Tl* the contact owns a 2006 Mercedes Benz CLK350. The contact stated that the passenger side seat belt warning indicator was illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 70,000. Updated 5/19/15 the consumer stated after filling the vehicle, gas fumes became very strong in the garage and inside the house. Updated 7/1/2015
2006 Mercedes-Benz CLK350 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.5L 6-cyl | 7-speed automatic | RWD | 17 / 26 / 20 |
EPA ratings. Class: Subcompact car.
Frequently asked questions
Is the 2006 Mercedes-Benz CLK350 a good car?
Based on 37 owner complaints filed with NHTSA, the 2006 CLK350 rates avoid: 3.9× as many complaints as a typical year of the CLK350 at the same age. It is one of the CLK350 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 2006 Mercedes-Benz CLK350?
The engine & cooling — 11 complaints, 30% of all complaints for this model year, most often about engine. Next are the fuel & propulsion system (11) and electrical system (5).
How many recalls does the 2006 Mercedes-Benz CLK350 have?
There are 4 recalls for the 2006 Mercedes-Benz CLK350, 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 CLK350?
The best years by complaints, compared at the same age, are 2009 and 2008. Years to avoid or approach with caution: 2006 and 2007. See the full Mercedes-Benz CLK350 years comparison.
At what mileage do 2006 Mercedes-Benz CLK350 problems happen?
The median mileage reported in complaints is about 70,000 miles; 23% 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.