FaultScore

Chevrolet Z71 vs Infiniti I35

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 Chevrolet Z71 Infiniti I35
Complaints on file 120 300
Model years covered 1993–2002 2001–2004
Worst model year 1998 2002
Best model year 1993 2004
Crashes reported 11 19
Fires reported 4 4
Injuries reported 10 17
Deaths reported 1 7
Most complained-about part Windows, Mirrors & Wipers Engine & Cooling
Share of complaints involving harm 21.7% 15.7%

Chevrolet Z71 by year

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

What breaks

Brakes 24 20.0%
Steering 12 10.0%
Airbags 9 7.5%
Transmission & Drivetrain 8 6.7%
Tires 8 6.7%
Seats 8 6.7%
Engine & Cooling 6 5.0%

Infiniti I35 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 109 36.3%
Airbags 32 10.7%
Electrical System 23 7.7%
Acceleration & Cruise Control 21 7.0%
Suspension 15 5.0%
Transmission & Drivetrain 14 4.7%
Brakes 14 4.7%
Other & Unspecified 13 4.3%