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Mercedes-Benz S550Model year report

2015 Mercedes-Benz S550 Problems

Complaints
41filed with NHTSA
Median mileage
22,300miles, 17 complaints with mileage
Recalls
5campaigns on record
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA crash rating
—no overall rating published
EPA fuel economy
20 mpgcombined, 4.7L 8-cyl RWD · 17 city / 26 hwy

Sources: NHTSA records for the 2015 Mercedes-Benz S550 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 41 consumer complaints for the 2015 Mercedes-Benz S550. The part named most often is other or unknown, with 7 complaints (17% of the total), followed by seat belts (7) and electrical system (5). 17 of the complaints include a mileage, and 82% of those were filed for vehicles with under 50,000 miles; the median is 22,300 miles. Of all complaints, 4 involved a crash, 3 a fire, 7 an injury, according to the filers. NHTSA lists 5 recall campaigns and 137 technical service bulletins for this model year. Other or unknown complaints overlap with 2 technical service bulletins filed under the same part.

Not compared (fewer than 3 comparable model years). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Fuel system (3), Tires (2), Forward collision avoidance (1), Latches, locks and linkages (1), Suspension (1), Transmission and drivetrain (1), Vehicle speed control (1).

Example complaints

Other or unknown: “The rear passenger door on the passenger side indicate that it is locked, and despite this, it can be opened from the outside without a key or remote.”

NHTSA complaint #11140401, filed 2018-10, 30,877 miles

Seat belts: “My wife installed a baby car seat in rear passenger seat. When I unbuckle to clean up the seat, seat belts were jammed and locked. I took it to the dealer and they quoted over 1200$ just for seat belt replacement.”

NHTSA complaint #11343760, filed 2020-08

Electrical system: “At night there is a dangerous,very distracting reflection in the windshield. What is being reflected upward are the lighted digital tachometer and speedometer. When the driver is driving at night in his or hers field of view are the dash gauges reflected vividly in the windshield glass. This condition exists in all 2015 S550's. And I believe that it exists on all 2014 S550 please address as I almost have had 3 accidents being distracted by this at night driving. Thank you”

NHTSA complaint #10663238, filed 2014-12, 500 miles

Body and structure: “There is an active recall on the 2015 Mercedes S550 for the Front Stationary Sunroof panel however my vehicle is not part of the recall due to the Vin#. Regardless the Front Stationary Sunroof Panel on my vehicle has failed and risks coming off while driving which could come into impact with another vehicle.”

NHTSA complaint #11579792, filed 2024-03

Mileage when problems were reported

82% of the 17 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 11,000 and 44,000 miles.

18%0–1047%10–2518%25–500%50–756%75–1006%100–1506%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (17 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 22,300 miles.

Complaints by year filed

Trend: rising. Complaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

’14’16’18’20’227’247’26
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2015 Mercedes-Benz S550 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
S550 RWD4.7L 8-cyl7-speed automatic172620$4,100

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2015 Mercedes-Benz S550 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 137 on record; the latest 10 are shown.

See all 137 bulletins →

Other model years of the Mercedes-Benz S550

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20171623,00010—21—Rising
20161557,2285—20—Rising
20154122,3005—20Not compared (fewer than 3 comparable model years)Rising
20142430,7505—20—Stable
2013732,4200—19—Not enough data
2012586,0002—19—Not enough data
2011967,4402—18—Not enough data
20101682,0000—18—Falling
20081970,0000—16—Rising
20075470,0000—17Not compared (before 2008)Falling

All Mercedes-Benz S550 model years

Frequently asked questions

How many NHTSA complaints does the 2015 Mercedes-Benz S550 have?

NHTSA recorded 41 consumer complaints for the 2015 Mercedes-Benz S550 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2015 Mercedes-Benz S550 is reported most often?

Other or unknown is named most often, in 7 complaints (17% of the total), followed by seat belts with 7.

Has the 2015 Mercedes-Benz S550 been recalled?

NHTSA lists 5 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2015 Mercedes-Benz S550 get?

The EPA rates the 2015 Mercedes-Benz S550 (S550, 4.7L 8-cyl) at 20 mpg combined, 17 city and 26 highway, with an estimated annual fuel cost of $4,100 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2015 Mercedes-Benz S550 reported?

Among the 17 complaints that include a mileage, the median is 22,300 miles and the middle half falls between 11,000 and 44,000 miles; 82% were filed for vehicles with under 50,000 miles.

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. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.