2006 Mercedes-Benz CLS500 Engine Problems
- Complaints
- 2about this part
- Share
- 3%of 62 total for the year
- Median mileage
- 81,430miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2006 Mercedes-Benz CLS500, 3% of the 62 complaints for this model year. Where a mileage was given, the median is 81,430 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 bought the used mercedes benz CLS500 2006 just four days ago. In the dealer notes , it said there were no electrical issues and the car runs smoothly . I test drove it , and it did . But now , this is the 4th time the car failed to start. Sometimes it doesn't start until I turn the key about 20 times. Yesterday , the car stopped on the road while I was driving it. Luckily , I managed to restart it and drove home . And the car won't start again . Please help.”
NHTSA complaint #10748825, filed 2015-08, 96,462 miles“The car gas sensor was not working. Vehicle stalled in the middle of busy intersection gas tank read that there was 1/4 tank. Could have caused a major collision. Problem with the fuel system, tank and sensors. This is the 3rd time. Fuel module not working correctly. All repairs have been done through mercedes dealership. This problem needs to be looked at I could have been killed. The system was replaced by mercedes twice. On going smell of gasoline.”
NHTSA complaint #10574204, filed 2014-03, 66,397 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…
- 10154018Jan 25, 2019ESP, BAS, PRE-SAFE - Fault message in instrument cluster
- 10158329Oct 9, 2017Oil in engine wiring harness
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2006 | 2 | 3% |
Other parts of the 2006 Mercedes-Benz CLS500
23 complaintsFuel system
23 complaintsAir bags
5 complaintsTransmission and drivetrain
4 complaintsWheels
4 complaintsElectrical system
3 complaintsElectronic stability control
3 complaintsVehicle speed control
3 complaintsTires
2 complaintsSeats
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2006 Mercedes-Benz CLS500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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