BMW Z4 vs KIA Sedona

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	BMW Z4	KIA Sedona
Complaints on file	1,444	3,406
Model years covered	2002–2022	2002–2021
Worst model year	2003	2002
Best model year	2008	2020
Crashes reported	34	185
Fires reported	7	199
Injuries reported	9	128
Deaths reported	2	7
Most complained-about part	Steering	Engine & Cooling
Share of complaints involving harm	3.6%	15.2%

BMW Z4 by year

6 460 443 204 107 42 27 26 10 57 7 12 10 7 5 7 11 1 2

02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 19 20 21 22

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

What breaks

Steering 993 68.8%

Airbags 101 7.0%

Engine & Cooling 78 5.4%

Electrical System 74 5.1%

Wheels 25 1.7%

Brakes 21 1.5%

Transmission & Drivetrain 18 1.2%

Body & Structure 18 1.2%

KIA Sedona by year

328 214 226 272 579 237 246 76 49 88 147 54 179 376 183 64 46 26 16

02 03 04 05 06 07 08 09 10 11 12 14 15 16 17 18 19 20 21

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

What breaks

Engine & Cooling 525 15.4%

Electrical System 491 14.4%

Brakes 330 9.7%

Airbags 240 7.0%

Body & Structure 229 6.7%

Suspension 203 6.0%

Acceleration & Cruise Control 175 5.1%

Other & Unspecified 173 5.1%