2021 Ford Mustang Mach-E · symptom sheet
Battery dies or the car will not start
- 71owner reports
- 25,000median miles
- $3,000median quote
- 0involved a crash
Newest report Sep 28, 2026 · checked Oct 2, 2026
154 of the 347 complaints on this car are about the electrical system. 71 of those describe dead battery. Only false collision warning is reported more often on this car.
Tick what matches of 71 reports
Dead battery on other Mustang Mach-E years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2023.
What this problem usually is
These owners walk out to a car that's dead. Some find it drained after sitting only a day or two, some need a jump start every week, and some have had the battery replaced more than once without the problem going away. A good number describe the dealer testing the battery, calling it fine, and sending them home.
What got replaced
Owners who name the part that was replaced mention the battery (68 reports) and the module (6 reports).
Recalls and investigations
4 recalls on the electrical system cover the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.
The high voltage battery main contactors may overheat.
The high voltage battery main contactors may overheat.
The high voltage battery main contactors may overheat.
All 13 recalls on the 2021 Ford Mustang Mach-E, with the owner complaints on each recalled system
NHTSA investigations into the electrical system on the Mustang Mach-E
Collisions involving ford bluecruise. Open.
Collisions involving ford bluecruise. Closed jan 17, 2025.
High voltage battery contactor failure. Closed dec 6, 2023, led to recall 23V-687.
Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.
What owners paid
5 of the 71 reports quote a price. Each dot is one quote. The middle half runs $250 to $3,500.
When it happens
The middle half of failures fell between 12,000 and 73,255 miles, from the 15 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 35 service bulletins or notices for the 2021 Ford Mustang Mach-E that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
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 (DC) fast charger level 3 with ...
25S65 Recall remedy -Prevents a potential lock-out condition caused by the vehicle's battery being discharged
Some of the vehicles listed in the Model statement above may exhibit a condition where the high voltage battery charges slowly or does not charge while using a level 1 or level 2 electric vehicle supply equipment (EVSE) after an over the air (OTA) update.
Some 2021-2022 Mustang Mach-E vehicles built on or before 28-May-2022 may exhibit an illuminated malfunction indicator lamp (MIL) and/or powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P0563, P0ADA, P0ADE, P0AA1, P0AA4, P0AA5, ...
31 more on the 2021 Ford Mustang Mach-E page.
What owners wrote
“The forward collision detection system failed first. Then the car suddenly would not move and gave a pull over immediately warning on the dash and also flashed a battery light. It was 15 degrees outside and my wife and son were stuck in the cold. Not a safe environment. This is inexcusable for a car to be driving fine on minute and to be completely inoperative the next.”
Filed Jan 20, 2025
“Driving in a 40mph zone and car suddenly lost all power followed by a message stop safetly now and the 12v battery icon. While coasting car lost power steering and upon stopping went into park and would not go into neutral for 30+ minutes”
Filed Aug 14, 2024
“After receiving the remedy to NHTSA campaign 22V-412 on Aug 5, 2022 via a Ford Power-Up over-the-air update, my high-voltage battery contactors still overheated and failed on Oct 25, 2022, requiring warrantied replacement by my Ford dealer on Oct 27, 2022.”
Filed Aug 21, 2023
“Powertrain failure- reduced/loss of power High voltage battery warning- unsafe to drive”
Filed Aug 14, 2023
Should you keep driving it?
This page can't tell you that. 0 of 71 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works
Other problems on this car
- Forward collision warning goes off or the camera drops out 81 reports
- Adaptive cruise or lane keeping misbehaves 71 reports
- Infotainment, screen or backup camera fails 69 reports
- Hybrid or EV system warning, loss of power 55 reports
- Engine stalls or loses power while driving 43 reports
- Brakes grind, pulse or wear early 31 reports