FaultScore

Mercedes Benz SLK vs BMW 750I

Both cars' complete complaint records, side by side.

Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.

Measure Mercedes Benz SLK BMW 750I
Complaints on file 96 239
Model years covered 1998–2009 2006–2020
Worst model year 2002 2007
Best model year 2003 2008
Crashes reported 2 7
Fires reported 0 6
Injuries reported 3 6
Deaths reported 0 0
Most complained-about part Windows, Mirrors & Wipers Transmission & Drivetrain
Share of complaints involving harm 5.2% 7.9%

Mercedes Benz SLK by year

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Windows, Mirrors & Wipers 18 18.8%
Electrical System 13 13.5%
Lights 12 12.5%
Transmission & Drivetrain 9 9.4%
Engine & Cooling 7 7.3%
Brakes 7 7.3%
Acceleration & Cruise Control 7 7.3%
Stability & Traction Control 7 7.3%

BMW 750I by year

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 37 15.5%
Airbags 28 11.7%
Electrical System 22 9.2%
Doors, Latches & Locks 22 9.2%
Body & Structure 17 7.1%
Brakes 13 5.4%
Seat Belts 12 5.0%