FaultScore

BMW M5 vs Mazda CX-30

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 M5 Mazda CX-30
Complaints on file 152 380
Model years covered 2000–2025 2020–2026
Worst model year 2006 2021
Best model year 2019 2025
Crashes reported 7 50
Fires reported 10 1
Injuries reported 6 23
Deaths reported 2 0
Most complained-about part Airbags Engine & Cooling
Share of complaints involving harm 16.4% 19.5%

BMW M5 by year

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

What breaks

Airbags 47 30.9%
Engine & Cooling 26 17.1%
Transmission & Drivetrain 13 8.6%
Electrical System 10 6.6%
Seat Belts 10 6.6%
Seats 7 4.6%
Fuel & Propulsion 6 3.9%
Other & Unspecified 6 3.9%

Mazda CX-30 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 67 17.6%
Brakes 33 8.7%
Windows, Mirrors & Wipers 21 5.5%
Transmission & Drivetrain 16 4.2%
Airbags 15 3.9%