FaultScore

Polestar Polestar 2 vs KIA RIO

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 Polestar Polestar 2 KIA RIO
Complaints on file 750 1,816
Model years covered 2021–2025 2000–2023
Worst model year 2022 2002
Best model year 2023 2023
Crashes reported 14 229
Fires reported 0 149
Injuries reported 6 163
Deaths reported 0 8
Most complained-about part Driver Assist & Collision Avoidance Engine & Cooling
Share of complaints involving harm 2.7% 30.2%

Polestar Polestar 2 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 15 2.0%
Acceleration & Cruise Control 10 1.3%
Transmission & Drivetrain 9 1.2%
Suspension 9 1.2%

KIA RIO by year

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

What breaks

Engine & Cooling 399 22.0%
Airbags 274 15.1%
Brakes 184 10.1%
Seat Belts 64 3.5%