2021 Ford Mustang Mach E transmission & drivetrain problems

Related recalls

• Recall 26V417000Jun 30, 202642,784 vehicles
  POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

  Ford Motor Company (Ford) is recalling certain 2021-2023 Mustang Mach E vehicles. The rear differential pinion shaft may fracture.

  Risk: Differential pinion shaft fracture may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied, increasing the risk of a crash.

  Remedy: Dealers will repair or replace the rear differential assembly as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed July 13, 2026. Additional letters will be sent once the remedy is available, anticipated in late December 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S50.

• Recall 22V333000May 13, 2022464 vehicles
  POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE · VEHICLE SPEED CONTROL

  Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles equipped with all-wheel drive. The powertrain control module (PCM) functional safety software may fail to detect a software error, resulting in unintended acceleration, unintended deceleration, or a loss of drive power.

  Risk: Unintended acceleration, unintended deceleration, or a loss of drive power increases the risk of a crash.

  Remedy: The PCM software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed June 9, 2022. Owners may contact Ford customer service at 1-800-436-7332. Ford's number for this recall is 22S29.

What owners say

1. Filed Sep 28, 2026TXElectrical SystemTransmission & Drivetrain

   I own a 2021 Ford Mustang Mach-E Standard Range RWD. My vehicle has experienced a high-voltage powertrain malfunction involving the high-voltage battery system/HV Battery Junction Box (HVBJB). The vehicle is currently at a Ford dealership for diagnosis and repair. What concerns me is that the same high-voltage/powertrain warning appeared on my vehicle previously, before the vehicle reached 100,000 miles. The warning appeared in my FordPass history, then went away. The…

   NHTSA complaint #11767486 · source
2. Filed Sep 28, 2026TXElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   While accelerating on a highway on-ramp, the vehicle displayed Powertrain Malfunction/Reduced Power, a High-Voltage Battery Warning. Power was reduced while merging into traffic. The same warnings appeared at about 90,000 miles and cleared on their own. This is a Standard Range RWD Mach-E, which was excluded from the high-voltage battery junction box recall. The vehicle was towed to AutoNation Ford Katy and diagnosed with HVBJB failure. Loss of propulsion at highway speeds…

   NHTSA complaint #11767349 · source
3. Filed Aug 18, 2026TXTransmission & Drivetrain

   My 2021 Ford Mustang Mach-E suffered a total loss of motive power on the road, throwing code P0D10:00:AF for a stuck-open high-voltage contactor. This is the exact failure mode of Safety Recall 23S56. Ford is refusing to cover the repair because my VIN was omitted from the database and the vehicle is at 108,017 miles, treating a hazardous powertrain defect as an out-of-warranty consumer expense. I have an active case number with Ford.

   NHTSA complaint #11757768 · source
4. Filed Jul 17, 2026OHEngineTransmission & Drivetrain

   While driving my 2021 Ford Mustang Mach-E, the front electric drive unit failed suddenly with no warning signs, warning lights, unusual noises, or any prior indication of a problem. During the failure, multiple fault messages appeared on the instrument cluster, including warnings that disabled adaptive cruise control and indicated the all-wheel-drive system was no longer functioning. The vehicle began to vibrate severely, feeling as though it was driving over rumble strips.…

   NHTSA complaint #11751215 · source
5. Filed Jul 17, 2026OHEngineTransmission & Drivetrain

   While driving my 2021 Ford Mustang Mach-E, the front electric drive unit failed suddenly with no warning signs, warning lights, unusual noises, or any prior indication of a problem. During the failure, multiple fault messages appeared on the instrument cluster, including warnings that disabled adaptive cruise control and indicated the all-wheel-drive system was no longer functioning. The vehicle began to vibrate severely, feeling as though it was driving over rumble strips.…

   NHTSA complaint #11751214 · source
6. Filed Feb 19, 2026ILElectrical SystemOther / UnknownTransmission & Drivetrain

   Vehicle experienced immediate loss of motive power while in motion at 45 mph after "Stop Safely Now" alert. This is a repeat power failure. The vehicle was in service for 75+ days (Dec-Feb) for this exact defect. The Ford service center said they replaced the “battery controller” yet the issue recurred. The car previously flagged this alert while in motion 2 times prior (one on the highway going ~65mph and on another major street going roughly ~45 mph). As a Ford Reacquired…

   NHTSA complaint #11719257 · source
7. Filed Feb 4, 2026OHTransmission & Drivetrain

   On Saturday, [XXX], while driving under normal conditions, the vehicle experienced a sudden and complete loss of propulsion without warning. There was no reduced-power mode, no dashboard alert, and no mobile app notification prior to shutdown. The vehicle was subsequently inspected by a Ford dealership. The technician identified an intermittent software-related condition consistent with Ford TSB 26-2005, which documents a fault capable of draining the 12-volt electrical…

   NHTSA complaint #11715476 · source
8. Filed Jan 22, 2026FLElectrical SystemTransmission & Drivetrain

   I am requesting immediate escalation regarding my 2021 Ford Mustang Mach-E (VIN: [XXX] ), which is currently undrivable due to being stuck in “Power Accessory Active” mode. The vehicle will not enter Drive. The dealer has diagnosed DCEM / high-voltage system-related faults and stated that recall repairs cannot be completed unless I first pay approximately $3,000 to repair the “main battery.” My concern is that the symptoms and failure mode exactly match the known…

   NHTSA complaint #11712665 · source
9. Filed Oct 20, 202540,400 miSCTowedBrakesEngineTransmission & Drivetrain

   The contact owns a 2021 Ford Mustang Mach-E. The contact stated that while driving approximately 20 - 25 MPH in the rain at night, the brake pedal was bouncing up and down. The contact stated that the doors locked and failed to open. Additionally, the vehicle stalled. The contact stated that the hazard lights were inoperable. They stated that one of the passenger’s side tire warning lights was illuminated. The contact stated that the battery was at 98 percent and that…

   NHTSA complaint #11694472 · source
10. Filed Sep 15, 2025TXElectrical SystemEngineTransmission & Drivetrain

    only incident I have had is that the dealership cannot fix the recall yet its been a week and still have not recieved anything ,or a loaner or a rental. I am in the military active duty and havent had anything

    NHTSA complaint #11687282 · source
11. Filed Jun 10, 2025NJBrakesAcceleration & Cruise ControlTransmission & Drivetrain

    Was driving and suddenly all errors started popping up Hill start assist warning 1 pedal driving unavailable Pre collision assist not available Antilock brake fault, etc Lost braking power, steering got stiff, accelerated suddenly.

    NHTSA complaint #11666168 · source
12. Filed Feb 24, 2025MITransmission & Drivetrain

    I have had the HVBJB replaced twice. I have had 2 high voltage warnings and power train malfunction. It in the shop again for the same problem. Supposedly getting fixed for the same problem.

    NHTSA complaint #11644674 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology