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

2000 vs 2001 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 311 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▼ 10.2% fewer 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	2000 share	2001 share	Share change
ELECTRICAL SYSTEM	16.7%	23.2%	▲ 6.6 pts larger share
AIR BAGS	8.9%	5.4%	▼ 3.6 pts smaller share
STEERING	12.1%	8.6%	▼ 3.5 pts smaller share
FUEL SYSTEM	6.8%	4.3%	▼ 2.5 pts smaller share
POWER TRAIN	5.2%	7.5%	▲ 2.3 pts larger share
SERVICE BRAKES	5.5%	7.1%	▲ 1.6 pts larger share
EXTERIOR LIGHTING	7.2%	8.6%	▲ 1.4 pts larger share
STRUCTURE	2.9%	1.5%	▼ 1.3 pts smaller share
VEHICLE SPEED CONTROL	2.4%	1.2%	▼ 1.1 pts smaller share
ENGINE	21.4%	20.6%	▼ 0.8 pts smaller share
SUSPENSION	2.5%	1.8%	▼ 0.7 pts smaller share
VISIBILITY	2.4%	2.1%	▼ 0.3 pts smaller share
PARKING BRAKE	0.1%	not reported	▼ 0.1 pts smaller share
BACK OVER PREVENTION	0.1%	not reported	▼ 0.1 pts smaller share
TIRES	0.5%	0.4%	▼ 0.1 pts smaller share
WHEELS	0.6%	0.6%	▼ 0.1 pts smaller share
SEAT BELTS	0.6%	0.7%	▲ 0.1 pts larger share
UNKNOWN OR OTHER	51.2%	51.5%	▲ 0.3 pts larger share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

2000 10

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

2001 10

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

NHTSA Consumer Complaints complaints · snapshot 2026-08-21