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

2010 vs 2011 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 191 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▲ 14.9% more reports in the equal exposure window

2010 435 complaints 2011 500 complaints

NHTSA Consumer Complaints complaints · snapshot 2026-08-21

Component share shift

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
AIR BAGS 13.7% 4.0% ▼ 9.7 pts smaller share
ELECTRICAL SYSTEM 19.0% 12.2% ▼ 6.8 pts smaller share
VEHICLE SPEED CONTROL 6.2% 8.6% ▲ 2.4 pts larger share
VISIBILITY 1.8% 4.2% ▲ 2.4 pts larger share
ENGINE 10.8% 12.8% ▲ 2.0 pts larger share
SEAT BELTS 3.0% 1.0% ▼ 2.0 pts smaller share
SERVICE BRAKES 4.6% 2.8% ▼ 1.8 pts smaller share
WHEELS 0.7% 2.0% ▲ 1.3 pts larger share
STEERING 6.4% 5.2% ▼ 1.2 pts smaller share
POWER TRAIN 11.0% 10.4% ▼ 0.6 pts smaller share
EXTERIOR LIGHTING 1.4% 0.8% ▼ 0.6 pts smaller share
FUEL SYSTEM 2.8% 2.4% ▼ 0.4 pts smaller share
TIRES 0.5% 0.8% ▲ 0.3 pts larger share
SUSPENSION 2.5% 2.2% ▼ 0.3 pts smaller share
STRUCTURE 0.9% 0.6% ▼ 0.3 pts smaller share
FORWARD COLLISION AVOIDANCE 0.2% not reported ▼ 0.2 pts smaller share
BACK OVER PREVENTION not reported 0.2% ▲ 0.2 pts larger share
UNKNOWN OR OTHER 21.3% 35.4% ▲ 14.1 pts larger share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

Recall campaigns

2010 4

Campaign components: AIR BAGS, ELECTRICAL SYSTEM, SEAT BELTS, and SUSPENSION

2011 2

Campaign components: ELECTRICAL SYSTEM and SUSPENSION

NHTSA Consumer Complaints complaints · snapshot 2026-08-21

Safety signals

◆ Fires
3 → 5
◆ Injuries
12 → 25