Equal-exposure complaint evidence and changes in the reported problem mix

2010 vs 2011 KIA OPTIMA

NHTSA Consumer Complaints complaints · snapshot 2026-08-21

Share shifts show how a vehicle's problem mix changed. They do not measure reliability, and complaint counts are not normalized for sales volume.

First 191 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▲ 739.2% more reports in the equal exposure window

NHTSA Consumer Complaints complaints · snapshot 2026-08-21

Bars start at the neutral midpoint. Left means a smaller share; right means a larger share.

View component share data as a table

Component	2010 share	2011 share	Share change
ENGINE	10.7%	35.1%	▲ 24.4 pts larger share
POWER TRAIN	26.7%	3.7%	▼ 23.0 pts smaller share
AIR BAGS	18.7%	3.5%	▼ 15.1 pts smaller share
STEERING	1.3%	14.3%	▲ 13.0 pts larger share
EXTERIOR LIGHTING	2.7%	13.7%	▲ 11.0 pts larger share
ELECTRICAL SYSTEM	12.0%	5.3%	▼ 6.7 pts smaller share
VEHICLE SPEED CONTROL	6.7%	3.1%	▼ 3.6 pts smaller share
SERVICE BRAKES	1.3%	4.8%	▲ 3.5 pts larger share
FUEL SYSTEM	not reported	2.4%	▲ 2.4 pts larger share
SEAT BELTS	2.7%	0.3%	▼ 2.4 pts smaller share
STRUCTURE	not reported	2.3%	▲ 2.3 pts larger share
TIRES	1.3%	not reported	▼ 1.3 pts smaller share
FORWARD COLLISION AVOIDANCE	1.3%	0.2%	▼ 1.2 pts smaller share
VISIBILITY	2.7%	1.6%	▼ 1.1 pts smaller share
WHEELS	not reported	0.8%	▲ 0.8 pts larger share
SUSPENSION	1.3%	1.8%	▲ 0.4 pts larger share
UNKNOWN OR OTHER	16.0%	15.1%	▼ 0.9 pts smaller share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

2010 1

Campaign components: EXTERIOR LIGHTING

2011 6

Campaign components: AIR BAGS, ENGINE AND ENGINE COOLING, EXTERIOR LIGHTING, and SERVICE BRAKES, HYDRAULIC

NHTSA Consumer Complaints complaints · snapshot 2026-08-21