2021 Ford Mustang Mach E fuel, hybrid & EV propulsion problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 28, 2026WIElectrical SystemFuel, Hybrid & EV Propulsion

   My 2021 Mustang MachE experienced a failure of the relay which connects its high-voltage battery to the rest of the car. The car is an EV, and the result of this is that the drive-motor had no power, and the car would not move. I would like to ask, please, that all model years with this known-issue (HVBJB - high voltage battery junction box) be recalled.

   NHTSA complaint #11767362 · 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 6, 2026NJElectrical SystemEngineFuel, Hybrid & EV Propulsion

   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 Mach-e's There was a recall for this HVBJB part / system on many of the 2021 models, but somehow mine wasn't included in the recall. I cannot afford this repair, and I was hoping…

   NHTSA complaint #11755300 · source
4. Filed Feb 7, 2026PAElectrical SystemFuel, Hybrid & EV PropulsionVisibility & Wipers

   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 visibility in cold weather and creates unsafe driving conditions. The vehicle has been taken to multiple authorized Ford dealerships for inspection and repair; however, the problem…

   NHTSA complaint #11716499 · source
5. Filed Oct 15, 2025GABrakesElectrical SystemFuel, Hybrid & EV Propulsion

   Car stalled once while going to a military appt but started up 3 mins later. Car then made a noise then stalled out of nowhere on the highway at a slow speed in heavy traffic causing anxiety. vehicle then had me stranded waiting for a tow to find out it’s the HVJB .

   NHTSA complaint #11693497 · source
6. Filed Dec 26, 2024NYElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   It has several error messages including "Stop safely now". This seems to be the same issue as recall 23S56 (TSB 22-2178). The vehicle is not drivable as it will not start or go into gear. Seems to be known issue with the HVBJB.

   NHTSA complaint #11632397 · source
7. Filed Oct 31, 2024COFuel, Hybrid & EV PropulsionAcceleration & Cruise Control

   It accelerated unexpectedly with no input while decelerating in one pedal drive mode. Cruise control was not in use at all during the drive.

   NHTSA complaint #11623040 · source
8. Filed Oct 19, 2024CAFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   Mach e standard edition shows multiple signs of a failing High Voltage Battery Junction Box (HVBJB). The vehicle was bought certified pre owned with only 12k miles on the vehicle. At 16k miles (2 months of ownership) the vehicle showed a high voltage battery warning and power train malfunction warning. Three warning lights were displayed on the dash which were: a yellow turtle, wrench, and car with exclamation. Vehicle was taken to service department where they ran updates…

   NHTSA complaint #11620777 · source
9. Filed Aug 14, 2024NYElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   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

   NHTSA complaint #11608571 · source
10. Filed May 6, 2024FLFuel, Hybrid & EV Propulsion

    Took vehicle to dealership for warranty repair as dealer confirmed parts available. Did not do repair due to Ford issuing a email to stop all repairs under this recall until further notice. Contacted Ford no reason why recall repairs stopped, no information when they would begin again. Ford recall notice blatant information without explanation. NHTSA site information is not accurate, parts are available but for undisclosed reasons they will not perform repair.

    NHTSA complaint #11587101 · source
11. Filed Apr 25, 2024NYBrakesElectrical SystemFuel, Hybrid & EV Propulsion

    One pedal drive system failure. Had the 22B50 charge port recall done on the 18th of April 24. After leaving the dealer upon approach to a light one mile away, one pedal disengaged during de-acceleration for the light. Warning did come up near the same time. It felt like vehicle was accelerating, but just loss regen. It has since happened daily. sometimes multiple times. Restart the car and it works normal. The recall was to reprogram the BCCM according to the dealer.

    NHTSA complaint #11585171 · source
12. Filed Apr 24, 2024HIFuel, Hybrid & EV PropulsionOther / Unknown

    This vehicle has 3 outstanding recalls: 21V711, 21V712, 23V687. The car was purchased new from Orchid Isle Ford in May 2021. They are the only electric vehicle Ford Dealer on Hawaii Island (they operate another non-electric vehicle dealership on the island). On [XXX] I had the annual maintenance performed. I requested that recalls 21V711 & 21V712 be done as well. the dealership declined and stated they would call me when they could do those recalls. They have never called. I…

    NHTSA complaint #11585082 · 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