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

2017 vs 2018 CHEVROLET VOLT

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 107 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▼ 66.4% 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	2017 share	2018 share	Share change
ELECTRICAL SYSTEM	20.7%	13.2%	▼ 7.5 pts smaller share
POWER TRAIN	23.5%	28.8%	▲ 5.3 pts larger share
FUEL SYSTEM	16.1%	21.0%	▲ 4.9 pts larger share
ENGINE	13.2%	11.0%	▼ 2.3 pts smaller share
SERVICE BRAKES	1.6%	3.2%	▲ 1.6 pts larger share
VEHICLE SPEED CONTROL	2.6%	1.4%	▼ 1.2 pts smaller share
FORWARD COLLISION AVOIDANCE	1.0%	not reported	▼ 1.0 pts smaller share
VISIBILITY	0.6%	1.4%	▲ 0.8 pts larger share
AIR BAGS	1.2%	0.5%	▼ 0.7 pts smaller share
TIRES	not reported	0.5%	▲ 0.5 pts larger share
BACK OVER PREVENTION	0.4%	not reported	▼ 0.4 pts smaller share
SEAT BELTS	0.4%	not reported	▼ 0.4 pts smaller share
WHEELS	0.3%	not reported	▼ 0.3 pts smaller share
EXTERIOR LIGHTING	0.3%	not reported	▼ 0.3 pts smaller share
SUSPENSION	0.1%	not reported	▼ 0.1 pts smaller share
LANE DEPARTURE	0.1%	not reported	▼ 0.1 pts smaller share
STEERING	2.2%	2.3%	▲ 0.1 pts larger share
UNKNOWN OR OTHER	20.7%	22.4%	▲ 1.7 pts larger share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

2017 0

Campaign components: not reported

2018 2

Campaign components: SEAT BELTS and SERVICE BRAKES, HYDRAULIC

NHTSA Consumer Complaints complaints · snapshot 2026-08-21