KIA RIO vs GMC Terrain

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	KIA RIO	GMC Terrain
Complaints on file	1,816	4,355
Model years covered	2000–2023	2010–2026
Worst model year	2002	2012
Best model year	2023	2022
Crashes reported	229	192
Fires reported	149	48
Injuries reported	163	156
Deaths reported	8	1
Most complained-about part	Engine & Cooling	Engine & Cooling
Share of complaints involving harm	30.2%	9.1%

KIA RIO by year

4 355 171 103 53 46 89 64 57 54 38 32 75 218 75 69 110 37 42 29 37 23 15 20

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

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%

Electrical System 159 8.8%

Other & Unspecified 130 7.2%

Fuel & Propulsion 102 5.6%

Transmission & Drivetrain 98 5.4%

Seat Belts 64 3.5%

GMC Terrain by year

426 557 500 485 385 384 183 181 324 299 299 53 71 69 74 26 39

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

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

What breaks

Engine & Cooling 1,269 29.1%

Windows, Mirrors & Wipers 504 11.6%

Transmission & Drivetrain 463 10.6%

Electrical System 346 7.9%

Other & Unspecified 303 7.0%

Brakes 287 6.6%

Fuel & Propulsion 272 6.2%

Airbags 167 3.8%