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

1991 vs 1992 MERCURY GRAND MARQUIS

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 419 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▲ 213.6% 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	1991 share	1992 share	Share change
ELECTRICAL SYSTEM	23.5%	11.8%	▼ 11.7 pts smaller share
SERVICE BRAKES	8.6%	17.7%	▲ 9.1 pts larger share
AIR BAGS	12.4%	4.7%	▼ 7.6 pts smaller share
ENGINE	12.4%	5.9%	▼ 6.4 pts smaller share
EXTERIOR LIGHTING	2.5%	8.3%	▲ 5.8 pts larger share
STEERING	not reported	3.2%	▲ 3.2 pts larger share
VEHICLE SPEED CONTROL	13.6%	11.0%	▼ 2.6 pts smaller share
PARKING BRAKE	2.5%	not reported	▼ 2.5 pts smaller share
FUEL SYSTEM	4.9%	7.1%	▲ 2.2 pts larger share
POWER TRAIN	7.4%	9.1%	▲ 1.7 pts larger share
VISIBILITY	2.5%	3.9%	▲ 1.5 pts larger share
WHEELS	not reported	1.2%	▲ 1.2 pts larger share
STRUCTURE	3.7%	4.3%	▲ 0.6 pts larger share
TIRES	1.2%	0.8%	▼ 0.4 pts smaller share
SEAT BELTS	not reported	0.4%	▲ 0.4 pts larger share
SUSPENSION	1.2%	1.6%	▲ 0.3 pts larger share
UNKNOWN OR OTHER	66.7%	78.7%	▲ 12.1 pts larger share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

1991 2

Campaign components: AIR BAGS and POWER TRAIN

1992 3

Campaign components: VEHICLE SPEED CONTROL

NHTSA Consumer Complaints complaints · snapshot 2026-08-21