2021 Ford Mustang Mach E fuel/propulsion system problems

47 owner complaints filed with NHTSA name the fuel/propulsion system on the 2021 Ford Mustang Mach E — 14% of all complaints for this model year.

Fuel/propulsion System complaints

14%

share of all complaints

—

median reported incident mileage

1 / 0

crash / fire reports

What owners report

“The HVBJB ($3500 + Tax) went on my car. It is out of battery system warranty by 25,000 miles (ended at 100,000 miles, I have 125,000 miles). I called Ford Corporate and they said they "have no current programs" to give me any good will discount on the repair. This is a big, known issue with Mustang…”
filed Aug 6, 2026
“After recall-related software updates were performed on my 2021 Ford Mustang Mach-E, the vehicle began experiencing repeated electrical and climate control failures. The heating and defrost system stopped working, leaving the vehicle without heat and causing the windows to fog, which reduces…”
filed Feb 7, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Some 2021-2023 Mustang Mach-E vehicles built on or before 25-Jun-2023, 2022-2025 E-Transit and 2022-2023 F-150 Lightning vehicles may experience a high voltage battery stop charging condition when using a direct current…
SSM 55080 · Service Bulletin/Repair Instructions · issued Aug 13, 2026