2014 Mercedes-Benz S550 Fuel system Problems
- Complaints
- 2about this part
- Share
- 8%of 24 total for the year
- Median mileage
- 3,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2014 Mercedes-Benz S550, 8% of the 24 complaints for this model year. Where a mileage was given, the median is 3,000 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.
“Aggravating noise associated with high pressure fuel pumps, tick, tick, ticking noise at any speed. Complained to dealer, but despite exchanging pumps, noise persists. Complained to mbusa, was told this was a 'normal noise'. Sounds like an oxymoron to me. Very disappointed with car noise and response to my plea for help.”
NHTSA complaint #10653968, filed 2014-11, 3,000 milesRelated service bulletins
- 10205814Aug 11, 2021Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning
- 10144074Mar 2, 2018Update fuel system control unit (FSCU) software
- 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 S550
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsBrakes
3 complaintsSteering
3 complaintsAir bags
2 complaintsSeat belts
2 complaintsSuspension
2 complaintsTransmission and drivetrain
2 complaintsElectrical system
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsExterior lighting
1 complaints
← All problems reported for the 2014 Mercedes-Benz S550
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