FaultScore

Mercedes Benz GLS 450 4MATIC vs Infiniti QX80

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 Mercedes Benz GLS 450 4MATIC Infiniti QX80
Complaints on file 77 190
Model years covered 2022–2025 2014–2026
Worst model year 2022 2017
Best model year 2023 2020
Crashes reported 18 6
Fires reported 1 0
Injuries reported 4 5
Deaths reported 0 0
Most complained-about part Driver Assist & Collision Avoidance Electrical System
Share of complaints involving harm 29.9% 5.8%

Mercedes Benz GLS 450 4MATIC by year

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

What breaks

Driver Assist & Collision Avoidance 17 22.1%
Electrical System 10 13.0%
Other & Unspecified 10 13.0%
Engine & Cooling 9 11.7%
Brakes 7 9.1%
Transmission & Drivetrain 4 5.2%
Wheels 4 5.2%
Acceleration & Cruise Control 3 3.9%

Infiniti QX80 by year

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

What breaks

Fuel & Propulsion 23 12.1%
Driver Assist & Collision Avoidance 23 12.1%
Engine & Cooling 20 10.5%
Airbags 17 8.9%
Brakes 14 7.4%
Acceleration & Cruise Control 9 4.7%