FaultScore

Mercedes Benz S Class vs Infiniti QX60

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 S Class Infiniti QX60
Complaints on file 338 827
Model years covered 1994–2012 2014–2027
Worst model year 2000 2017
Best model year 1994 2025
Crashes reported 9 37
Fires reported 9 8
Injuries reported 10 35
Deaths reported 0 0
Most complained-about part Electrical System Transmission & Drivetrain
Share of complaints involving harm 8.3% 9.7%

Mercedes Benz S Class by year

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

What breaks

Electrical System 118 34.9%
Suspension 67 19.8%
Lights 33 9.8%
Airbags 19 5.6%
Engine & Cooling 15 4.4%
Transmission & Drivetrain 12 3.6%
Tires 11 3.3%
Equipment & Accessories 11 3.3%

Infiniti QX60 by year

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

What breaks