FaultScore

Yamaha YZFR6 vs Mazda RX7

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 Yamaha YZFR6 Mazda RX7
Complaints on file 58 144
Model years covered 1999–2014 1982–1989
Worst model year
Best model year
Crashes reported 8 4
Fires reported 2 52
Injuries reported 9 7
Deaths reported 0 2
Most complained-about part Electrical System Fuel & Propulsion
Share of complaints involving harm 32.8% 45.1%

Yamaha YZFR6 by year

99 00 01 02 03 04 06 07 09 13 14
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Transmission & Drivetrain 13 22.4%
Acceleration & Cruise Control 4 6.9%
Engine & Cooling 3 5.2%
Body & Structure 3 5.2%
Fuel & Propulsion 3 5.2%
Suspension 2 3.4%
Other & Unspecified 2 3.4%

Mazda RX7 by year

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

What breaks

Seat Belts 23 16.0%
Engine & Cooling 20 13.9%
Electrical System 17 11.8%
Windows, Mirrors & Wipers 8 5.6%
Brakes 4 2.8%
Equipment & Accessories 3 2.1%
Steering 2 1.4%