Mercury Grand Marquis vs GMC Sierra 1500

Both cars' complete complaint records, side by side.

Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.

Measure	Mercury Grand Marquis	GMC Sierra 1500
Complaints on file	4,954	11,637
Model years covered	1977–2011	1994–2026
Worst model year	2003	2019
Best model year	2011	1994
Crashes reported	395	364
Fires reported	277	142
Injuries reported	239	186
Deaths reported	15	3
Most complained-about part	Lights	Engine & Cooling
Share of complaints involving harm	18.7%	6%

Mercury Grand Marquis by year

1 1 2 8 14 24 29 22 57 98 69 63 106 330 178 197 222 282 370 168 202 216 207 101 449 423 634 188 111 101 35 35 11

77 78 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Lights 951 19.2%

Electrical System 556 11.2%

Engine & Cooling 535 10.8%

Acceleration & Cruise Control 459 9.3%

Brakes 369 7.4%

Steering 365 7.4%

Airbags 248 5.0%

Transmission & Drivetrain 238 4.8%

GMC Sierra 1500 by year

15 3 7 100 68 182 215 171 192 210 253 218 183 313 442 280 217 364 149 147 1,031 933 448 476 426 907 688 774 773 633 491 176 152

94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 2,253 19.4%

Brakes 1,781 15.3%

Transmission & Drivetrain 1,314 11.3%

Electrical System 1,197 10.3%

Airbags 948 8.1%

Other & Unspecified 870 7.5%

Steering 610 5.2%

Body & Structure 572 4.9%