Skip to content
EnginePart report

2006 Mercedes-Benz CLK350 Engine Problems

Complaints
6about this part
Share
16%of 37 total for the year
Median mileage
78,957miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the engine of the 2006 Mercedes-Benz CLK350, 16% of the 37 complaints for this model year. Where a mileage was given, the median is 78,957 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“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,”

NHTSA complaint #11430148, filed 2021-08

“The dealer sold the car without disclosing the multiple safety issues pertaining to the car; such as, the supplemental restraint system, control arms, ball joints, engine instability, emissions deception, and odometer accuracy, and flood damage. During the generation of the purchase, the dealer insinuated the car was never involved in any accidents but the vehicle's history reported 3 that I discovered 'after' I purchased the car. Regarding proof of engine instability, I could not upload the video on this form.”

NHTSA complaint #11221966, filed 2019-06

“The contact owns a 2006 Mercedes-Benz CLK350. The contact stated that the vehicle was equipped with a faulty balance shaft, which ultimately caused premature wear. After the vehicle was serviced for regularly scheduled maintenance, the check engine indicator illuminated. The vehicle was taken to Mercedes-Benz of orange park (7018 blanding blvd, jacksonville, fl) where it was diagnosed that the balance shaft needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 30,000.”

NHTSA complaint #11051743, filed 2017-12, 30,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
200817%
2007410%
2006616%

Other parts of the 2006 Mercedes-Benz CLK350

Fuel system
11 complaints
Electrical system
5 complaints
Engine cooling
5 complaints
Air bags
4 complaints
Transmission and drivetrain
3 complaints
Brakes
2 complaints
Exterior lighting
2 complaints
Seats
2 complaints
Suspension
2 complaints
Electronic stability control
1 complaints
Seat belts
1 complaints
Steering
1 complaints

← All problems reported for the 2006 Mercedes-Benz CLK350

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology