2014 Mercedes-Benz CLS550 Fuel system Problems
- Complaints
- 1about this part
- Share
- 10%of 10 total for the year
- Median mileage
- 82,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the fuel system of the 2014 Mercedes-Benz CLS550, 10% of the 10 complaints for this model year. Where a mileage was given, the median is 82,000 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.
“While vehicle was stationary in garage, we began noticing a profuse gas/fuel smell. It became increasingly strong in and out of the vehicle. Approximately 3 days after smell was noticed, I contacted the local mercedes benz dealership to advise of the issue. I also did some research online, and discovered that previous years specifically; 2006-2011 cls class vehicles exhibited the same defect which was addressed with the NHTSA and to which mb-USA agreed to extend the warranty for covered fuel tank components from the original 4 years to 15 years. …”
NHTSA complaint #11338036, filed 2020-07, 82,000 milesRelated service bulletins
- 10167487Mar 21, 2014Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278. 1. Left cylinder head: Oil passage plug hole on left beside mechanical vacuum pump. 2…
Fuel system: other model years
Other parts of the 2014 Mercedes-Benz CLS550
2 complaintsAir bags
1 complaintsBrakes
1 complaintsOther or unknown
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2014 Mercedes-Benz CLS550
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