FaultScore

Worst years for a Mercedes Benz SLK350

Owners have filed 66 complaints about the Mercedes Benz SLK350 with NHTSA across model years 2005 to 2008. More of them are about the airbags than anything else.

Avoid

2005 Mercedes Benz SLK350

36 complaints — the highest FaultScore of any year, mostly transmission & drivetrain.

Cleanest on record

2007 Mercedes Benz SLK350

12 complaints — the lowest FaultScore of the graded years.

Every Mercedes Benz SLK350 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
2008 4 0 0 Airbags
2007 B 12 0 0 45,000 Airbags
2006 D 14 1 1 47,169 Transmission & Drivetrain
2005 F 36 5 3 56,851 Transmission & Drivetrain

What breaks on a Mercedes Benz SLK350

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

Airbags 14 21.2%

Worst in 2007

Transmission & Drivetrain 11 16.7%

Worst in 2005

Engine & Cooling 8 12.1%

Worst in 2005

Other & Unspecified 6 9.1%

Worst in 2005

Brakes 5 7.6%

Worst in 2005

Suspension 5 7.6%

Worst in 2005

Electrical System 3 4.5%

Worst in 2005

Acceleration & Cruise Control 3 4.5%

Worst in 2006

Fuel & Propulsion 3 4.5%

Worst in 2005

Body & Structure 2 3.0%

Worst in 2005

Lights 2 3.0%

Worst in 2005

Windows, Mirrors & Wipers 2 3.0%

Worst in 2005

Steering 1 1.5%

Worst in 2005

Seats 1 1.5%

Worst in 2007

Complaints filed over time

Every complaint about every Mercedes Benz SLK350, by the month it reached NHTSA.

Apr 2007 peak 7 Aug 2025

Compare the Mercedes Benz SLK350

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