Ford Mustang Mach E vs KIA Sephia
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 | Ford Mustang Mach E | KIA Sephia |
|---|---|---|
| Complaints on file | 1,236 | 3,080 |
| Model years covered | 2021–2026 | 1986–2003 |
| Worst model year | 2021 | 1999 |
| Best model year | 2025 | 1994 |
| Crashes reported | 76 | 299 |
| Fires reported | 2 | 118 |
| Injuries reported | 16 | 171 |
| Deaths reported | 0 | 6 |
| Most complained-about part | Driver Assist & Collision Avoidance | Brakes |
| Share of complaints involving harm | 7.6% | 19.3% |
Ford Mustang Mach E by year
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%
KIA Sephia by year
What breaks
Brakes
806
26.2%
Engine & Cooling
395
12.8%
Electrical System
348
11.3%
Transmission & Drivetrain
293
9.5%
Airbags
174
5.6%
Fuel & Propulsion
164
5.3%
Body & Structure
127
4.1%
Windows, Mirrors & Wipers
125
4.1%