Mercury Marquis vs Ford Mustang Mach E

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 Marquis	Ford Mustang Mach E
Complaints on file	501	1,236
Model years covered	1977–2004	2021–2026
Worst model year	1997	2021
Best model year	2004	2025
Crashes reported	48	76
Fires reported	37	2
Injuries reported	43	16
Deaths reported	0	0
Most complained-about part	Engine & Cooling	Driver Assist & Collision Avoidance
Share of complaints involving harm	25.5%	7.6%

Mercury Marquis by year

1 1 1 23 6 4 5 14 11 8 10 30 25 44 26 40 62 40 31 24 27 11 42 15

77 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04

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

What breaks

Engine & Cooling 67 13.4%

Brakes 65 13.0%

Electrical System 61 12.2%

Acceleration & Cruise Control 54 10.8%

Lights 42 8.4%

Steering 28 5.6%

Transmission & Drivetrain 25 5.0%

Suspension 25 5.0%

Ford Mustang Mach E by year

665 247 213 85 23 3

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

Driver Assist & Collision Avoidance 311 25.2%

Electrical System 310 25.1%

Other & Unspecified 112 9.1%

Transmission & Drivetrain 109 8.8%

Fuel & Propulsion 85 6.9%

Brakes 84 6.8%

Acceleration & Cruise Control 73 5.9%

Engine & Cooling 39 3.2%