FaultScore

Porsche 911 Carrera vs BMW X4

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 Porsche 911 Carrera BMW X4
Complaints on file 55 137
Model years covered 1997–2020 2015–2025
Worst model year 2015
Best model year 2016
Crashes reported 3 17
Fires reported 6 8
Injuries reported 3 4
Deaths reported 0 0
Most complained-about part Engine & Cooling Engine & Cooling
Share of complaints involving harm 21.8% 21.2%

Porsche 911 Carrera by year

97 99 00 01 02 03 04 05 13 14 17 20
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 13 23.6%
Airbags 10 18.2%
Electrical System 6 10.9%
Seat Belts 5 9.1%
Fuel & Propulsion 4 7.3%
Suspension 3 5.5%
Transmission & Drivetrain 2 3.6%
Steering 2 3.6%

BMW X4 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 27 19.7%
Brakes 14 10.2%
Other & Unspecified 14 10.2%
Transmission & Drivetrain 11 8.0%
Driver Assist & Collision Avoidance 8 5.8%
Airbags 7 5.1%
Suspension 6 4.4%