FaultScore

Mazda CX-90 Plug-In Hybrid vs Buick Roadmaster

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 Mazda CX-90 Plug-In Hybrid Buick Roadmaster
Complaints on file 184 452
Model years covered 2024–2025 1989–1999
Worst model year 1994
Best model year 1996
Crashes reported 16 61
Fires reported 0 12
Injuries reported 8 43
Deaths reported 0 0
Most complained-about part Electrical System Brakes
Share of complaints involving harm 13% 25.7%

Mazda CX-90 Plug-In Hybrid 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 33 17.9%
Steering 19 10.3%
Fuel & Propulsion 16 8.7%
Other & Unspecified 14 7.6%
Transmission & Drivetrain 11 6.0%
Acceleration & Cruise Control 8 4.3%

Buick Roadmaster by year

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

What breaks