FaultScore

Worst years for a Mercedes Benz CLS550

Owners have filed 82 complaints about the Mercedes Benz CLS550 with NHTSA across model years 2006 to 2009. More of them are about the fuel & propulsion than anything else.

Avoid

2007 Mercedes Benz CLS550

44 complaints — the highest FaultScore of any year, mostly fuel & propulsion.

Cleanest on record

2006 Mercedes Benz CLS550

10 complaints — the lowest FaultScore of the graded years.

Every Mercedes Benz CLS550 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
2009 6 1 0 61,000 Engine & Cooling
2008 B 22 0 0 84,997 Fuel & Propulsion
2007 C 44 0 1 57,250 Fuel & Propulsion
2006 A 10 0 0 Brakes

What breaks on a Mercedes Benz CLS550

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

Worst in 2007

Engine & Cooling 6 7.3%

Worst in 2007

Transmission & Drivetrain 6 7.3%

Worst in 2007

Electrical System 6 7.3%

Worst in 2008

Suspension 6 7.3%

Worst in 2007

Airbags 5 6.1%

Worst in 2008

Brakes 4 4.9%

Worst in 2006

Other & Unspecified 4 4.9%

Worst in 2007

Tires 3 3.7%

Worst in 2007

Steering 2 2.4%

Worst in 2007

Stability & Traction Control 2 2.4%

Worst in 2007

Acceleration & Cruise Control 1 1.2%

Worst in 2007

Lights 1 1.2%

Worst in 2008

Windows, Mirrors & Wipers 1 1.2%

Worst in 2007

Complaints filed over time

Every complaint about every Mercedes Benz CLS550, by the month it reached NHTSA.

Apr 2007 peak 3 Oct 2025

Compare the Mercedes Benz CLS550

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