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 milesRelated service bulletins
- 11017039Apr 1, 2025Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant…
- 10158329Oct 9, 2017Oil in engine wiring harness
- 11031629Oct 30, 2015To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) entered into a settlement…
Engine: other model years
Other parts of the 2006 Mercedes-Benz CLK350
11 complaintsElectrical system
5 complaintsEngine cooling
5 complaintsAir bags
4 complaintsTransmission and drivetrain
3 complaintsBrakes
2 complaintsExterior lighting
2 complaintsSeats
2 complaintsSuspension
2 complaintsElectronic stability control
1 complaintsSeat belts
1 complaintsSteering
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