Mercedes Benz R350 vs KIA K5

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 R350 KIA K5
Complaints on file 307 765
Model years covered 2006–2012 2021–2026
Worst model year 2006 2022
Best model year 2010 2026
Crashes reported 7 56
Fires reported 19 14
Injuries reported 12 52
Deaths reported 0 4
Most complained-about part Suspension Fuel & Propulsion
Share of complaints involving harm 12.4% 16.5%

Mercedes Benz R350 by year

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

What breaks

Suspension 55 17.9%
Engine & Cooling 54 17.6%
Airbags 40 13.0%
Brakes 23 7.5%
Transmission & Drivetrain 20 6.5%
Seats 20 6.5%
Steering 17 5.5%

KIA K5 by year

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

What breaks