Mercury Mountaineer vs Chrysler 300

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 Mountaineer	Chrysler 300
Complaints on file	2,646	6,476
Model years covered	1996–2010	1970–2023
Worst model year	1997	2005
Best model year	2010	2021
Crashes reported	191	355
Fires reported	91	191
Injuries reported	148	207
Deaths reported	5	9
Most complained-about part	Transmission & Drivetrain	Electrical System
Share of complaints involving harm	16.4%	11.8%

Mercury Mountaineer by year

3 399 298 182 164 32 504 220 271 113 153 119 156 8 24

96 97 98 99 00 01 02 03 04 05 06 07 08 09 10

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

What breaks

Transmission & Drivetrain 399 15.1%

Tires 364 13.8%

Body & Structure 298 11.3%

Acceleration & Cruise Control 221 8.4%

Engine & Cooling 217 8.2%

Electrical System 190 7.2%

Brakes 142 5.4%

Seats 127 4.8%

Chrysler 300 by year

1 4 1,062 1,267 620 956 114 150 266 621 403 321 142 102 102 207 86 10 27 6 9

70 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

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

What breaks

Electrical System 1,496 23.1%

Airbags 1,168 18.0%

Transmission & Drivetrain 966 14.9%

Engine & Cooling 641 9.9%

Fuel & Propulsion 369 5.7%

Other & Unspecified 367 5.7%

Brakes 230 3.6%

Steering 211 3.3%