FaultScore

Lexus IS F vs RAM 4500

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 Lexus IS F RAM 4500
Complaints on file 26 64
Model years covered 2008–2017 2009–2024
Worst model year 2014
Best model year 2018
Crashes reported 3 6
Fires reported 0 8
Injuries reported 2 2
Deaths reported 0 0
Most complained-about part Airbags Brakes
Share of complaints involving harm 19.2% 25%

Lexus IS F by year

08 09 10 11 14 16 17
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Airbags 13 50.0%
Engine & Cooling 5 19.2%
Other & Unspecified 3 11.5%
Transmission & Drivetrain 1 3.8%
Body & Structure 1 3.8%
Acceleration & Cruise Control 1 3.8%
Fuel & Propulsion 1 3.8%
Windows, Mirrors & Wipers 1 3.8%

RAM 4500 by year

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

What breaks

Brakes 13 20.3%
Engine & Cooling 11 17.2%
Transmission & Drivetrain 9 14.1%
Steering 6 9.4%
Fuel & Propulsion 6 9.4%
Suspension 4 6.3%
Wheels 4 6.3%
Windows, Mirrors & Wipers 3 4.7%