FaultScore

BMW Z3 Roadster vs Porsche Cayenne S

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 BMW Z3 Roadster Porsche Cayenne S
Complaints on file 55 135
Model years covered 1998–2001 2003–2020
Worst model year 1998 2004
Best model year 2001 2011
Crashes reported 1 8
Fires reported 0 1
Injuries reported 3 5
Deaths reported 0 0
Most complained-about part Body & Structure Engine & Cooling
Share of complaints involving harm 7.3% 10.4%

BMW Z3 Roadster by year

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

What breaks

Body & Structure 15 27.3%
Airbags 9 16.4%
Transmission & Drivetrain 7 12.7%
Suspension 6 10.9%
Electrical System 3 5.5%
Engine & Cooling 2 3.6%
Brakes 2 3.6%
Fuel & Propulsion 2 3.6%

Porsche Cayenne S 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 31.1%
Fuel & Propulsion 15 11.1%
Electrical System 8 5.9%
Tires 8 5.9%
Brakes 5 3.7%
Lights 5 3.7%
Doors, Latches & Locks 5 3.7%