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

2004 vs 2005 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 263 months on market for each model year

Exposure window calculated through Aug 22, 2026

Age-matched reports

▲ 39.3% 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	2004 share	2005 share	Share change
STEERING	18.5%	3.5%	▼ 15.0 pts smaller share
AIR BAGS	0.9%	8.5%	▲ 7.6 pts larger share
SEAT BELTS	not reported	5.4%	▲ 5.4 pts larger share
ELECTRICAL SYSTEM	2.6%	5.8%	▲ 3.2 pts larger share
EXTERIOR LIGHTING	56.4%	58.1%	▲ 1.7 pts larger share
VEHICLE SPEED CONTROL	5.5%	6.9%	▲ 1.4 pts larger share
ENGINE	2.9%	1.7%	▼ 1.2 pts smaller share
POWER TRAIN	1.7%	0.6%	▼ 1.1 pts smaller share
SERVICE BRAKES	1.5%	2.5%	▲ 1.0 pts larger share
FUEL SYSTEM	1.5%	0.4%	▼ 1.0 pts smaller share
VISIBILITY	2.3%	1.7%	▼ 0.7 pts smaller share
SUSPENSION	0.9%	0.4%	▼ 0.5 pts smaller share
TIRES	0.9%	0.6%	▼ 0.3 pts smaller share
FORWARD COLLISION AVOIDANCE	not reported	0.2%	▲ 0.2 pts larger share
STRUCTURE	1.5%	1.7%	▲ 0.2 pts larger share
PARKING BRAKE	not reported	0.2%	▲ 0.2 pts larger share
WHEELS	0.3%	0.2%	▼ 0.1 pts smaller share
UNKNOWN OR OTHER	18.2%	16.8%	▼ 1.4 pts smaller share

NHTSA Safety Recalls recalls · snapshot 2026-08-22

2004 2

Campaign components: EXTERIOR LIGHTING

2005 5

Campaign components: ELECTRICAL SYSTEM, EXTERIOR LIGHTING, and STEERING

NHTSA Consumer Complaints complaints · snapshot 2026-08-21