FaultScore

Scion IQ vs Mercedes Benz CLS500

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 Scion IQ Mercedes Benz CLS500
Complaints on file 35 87
Model years covered 2012–2015 2004–2009
Worst model year
Best model year
Crashes reported 12 5
Fires reported 0 0
Injuries reported 7 3
Deaths reported 0 0
Most complained-about part Engine & Cooling Fuel & Propulsion
Share of complaints involving harm 54.3% 9.2%

Scion IQ by year

12 13 14 15
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 9 25.7%
Body & Structure 7 20.0%
Airbags 6 17.1%
Acceleration & Cruise Control 3 8.6%
Other & Unspecified 3 8.6%
Transmission & Drivetrain 2 5.7%
Steering 2 5.7%
Brakes 1 2.9%

Mercedes Benz CLS500 by year

04 06 07 09
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Brakes 24 27.6%
Airbags 6 6.9%
Transmission & Drivetrain 4 4.6%
Electrical System 4 4.6%
Acceleration & Cruise Control 4 4.6%
Wheels 4 4.6%
Engine & Cooling 3 3.4%