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

2001 vs 2002 CHEVROLET IMPALA

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 299 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▲ 6.9% 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	2001 share	2002 share	Share change
ELECTRICAL SYSTEM	23.2%	28.9%	▲ 5.6 pts larger share
EXTERIOR LIGHTING	8.6%	14.0%	▲ 5.4 pts larger share
POWER TRAIN	7.5%	3.5%	▼ 4.0 pts smaller share
STEERING	8.6%	5.6%	▼ 3.0 pts smaller share
ENGINE	20.6%	18.1%	▼ 2.5 pts smaller share
VISIBILITY	2.1%	3.5%	▲ 1.4 pts larger share
FUEL SYSTEM	4.3%	3.4%	▼ 0.9 pts smaller share
SUSPENSION	1.8%	0.9%	▼ 0.9 pts smaller share
STRUCTURE	1.5%	0.9%	▼ 0.6 pts smaller share
AIR BAGS	5.4%	4.9%	▼ 0.5 pts smaller share
SEAT BELTS	0.7%	0.3%	▼ 0.4 pts smaller share
SERVICE BRAKES	7.1%	7.4%	▲ 0.3 pts larger share
WHEELS	0.6%	0.3%	▼ 0.3 pts smaller share
TIRES	0.4%	0.3%	▼ 0.2 pts smaller share
BACK OVER PREVENTION	not reported	0.1%	▲ 0.1 pts larger share
FORWARD COLLISION AVOIDANCE	not reported	0.1%	▲ 0.1 pts larger share
VEHICLE SPEED CONTROL	1.2%	1.3%	▲ 0.1 pts larger share
UNKNOWN OR OTHER	51.5%	48.4%	▼ 3.1 pts smaller share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

2001 10

Campaign components: AIR BAGS, ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING, FUEL SYSTEM, GASOLINE, and FUEL SYSTEM, OTHER

2002 7

Campaign components: AIR BAGS, ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING, and FUEL SYSTEM, OTHER

NHTSA Consumer Complaints complaints · snapshot 2026-08-21