FaultScore

Worst years for a Mercedes Benz S550

Owners have filed 184 complaints about the Mercedes Benz S550 with NHTSA across model years 2010 to 2017. More of them are about the other & unspecified than anything else.

Avoid

2015 Mercedes Benz S550

58 complaints — the highest FaultScore of any year, mostly seat belts.

Cleanest on record

2016 Mercedes Benz S550

18 complaints — the lowest FaultScore of the graded years.

Every Mercedes Benz S550 year, graded

The grade compares each year against the rest of this model's own run — never against another car. Click any bar or row to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded
Year Grade Complaints Crashes Fires Median miles Most reported
2017 B 20 0 0 30,500 Windows, Mirrors & Wipers
2016 B 18 0 0 57,227 Other & Unspecified
2015 F 58 10 8 22,300 Seat Belts
2014 F 36 7 0 16,000 Windows, Mirrors & Wipers
2013 B 10 0 0 32,420 Lights
2012 8 0 2 Engine & Cooling
2011 C 12 1 1 Fuel & Propulsion
2010 B 22 1 0 57,800 Suspension

What breaks on a Mercedes Benz S550

Across every model year on file. Follow a row for that part's complaints and the year it was worst.

Other & Unspecified 24 13.0%

Worst in 2015

Steering 18 9.8%

Worst in 2010

Fuel & Propulsion 16 8.7%

Worst in 2010

Body & Structure 15 8.2%

Worst in 2015

Windows, Mirrors & Wipers 13 7.1%

Worst in 2014

Seat Belts 12 6.5%

Worst in 2015

Engine & Cooling 11 6.0%

Worst in 2015

Electrical System 11 6.0%

Worst in 2015

Suspension 10 5.4%

Worst in 2010

Airbags 9 4.9%

Worst in 2015

Tires 8 4.3%

Worst in 2016

Wheels 8 4.3%

Worst in 2015

Brakes 6 3.3%

Worst in 2014

Driver Assist & Collision Avoidance 6 3.3%

Worst in 2014

Complaints filed over time

Every complaint about every Mercedes Benz S550, by the month it reached NHTSA.

Mar 2011 peak 6 Aug 2026

Compare the Mercedes Benz S550

Side by side on complaint history. Remember that raw totals track how many were sold as much as how good they were.