Mercedes Benz SLK320 vs Porsche Panamera

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 SLK320 Porsche Panamera
Complaints on file 66 164
Model years covered 2001–2004 2010–2026
Worst model year — 2014
Best model year — 2012
Crashes reported 3 12
Fires reported 1 3
Injuries reported 0 8
Deaths reported 0 0
Most complained-about part Brakes Engine & Cooling
Share of complaints involving harm 6.1% 14%

Mercedes Benz SLK320 by year

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

What breaks

Brakes 19 28.8%
Lights 12 18.2%
Stability & Traction Control 12 18.2%
Electrical System 8 12.1%
Windows, Mirrors & Wipers 3 4.5%
Other & Unspecified 3 4.5%
Transmission & Drivetrain 2 3.0%
Steering 2 3.0%

Porsche Panamera 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 42 25.6%
Transmission & Drivetrain 21 12.8%
Other & Unspecified 15 9.1%
Fuel & Propulsion 10 6.1%
Airbags 7 4.3%
Brakes 7 4.3%
Acceleration & Cruise Control 5 3.0%