2021 Ford Mustang Mach E Fuel system Problems
- Complaints
- 49about this part
- Share
- 14%of 351 total for the year
- Median mileage
- —not reported
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 49 complaints about the fuel system of the 2021 Ford Mustang Mach E, 14% of the 351 complaints for this model year. 1 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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, filed 2026-09“Unintended acceleration from a stop when pushing accelerator. Has happened 2 times in the last 2 days. I touched the throttle from a stop 2 time and it took off like I put the accelerator to full throttle (which I didn’t). Very dangerous situation in parking lots or around pedestrians. I have scheduled an apt with my local dealer.”
NHTSA complaint #11511215, filed 2023-03“While parking in a garage the vehicle unexpectedly accelerated and ran into a wall. Anyone in or around the car may have been seriously ignored. The issues has happened twice but can not be reproduced by me. There we no indicators that the event was about to take place There is a recall for this on the vehicle type but not for the date of my manufacturing.”
NHTSA complaint #11465417, filed 2022-05“I had been driving without issue, no warnings from the car. I parked at a gas station to get a snack. When I got back in the car could not be started or driven. It has to be placed on a flatbed and towed to the dealer. The message on start was “Stop safely now”. My vehicle had Safety Recall 22S41, which obviously does NOT fix the issue.”
NHTSA complaint #11486307, filed 2022-09“Shortly after entering the freeway on August 18, 2023, my vehicle experienced a powertrain malfunction and displayed a Service Vehicle Soon warning light along with a vehicle with an exclamation point light and a wrench light. Motive power was reduced. I received a Diagnostic Test Code of P0ADA, indicating that there was a hybrid powertrain fault. The dealer has confirmed the code and is ordering a replacement part.”
NHTSA complaint #11540062, filed 2023-08Related service bulletins
- 11036286Aug 13, 2026Some 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…
- 11035269Jul 23, 2026Some 2021-2026 Ford/Lincoln vehicles may exhibit various symptoms including but not limited to the auto start/stop system not operating as intended with a "Check Charging System"…
- 11027722Jan 19, 2026This article supersedes TSB 25-2058 to update: service procedure enhancements, and increase labor operation allowances. Some of the vehicles listed in the Model statement above…
- 11025811Nov 18, 2025Some 2021-2023 Mustang Mach-E vehicles equipped with nickel, cobalt and manganese (NCM) standard/extended range battery with minor feature codes HTHAD/HTHAE and 2022-2025…
- 11020978Jul 25, 2025This article supersedes TSB 22-2491 to update labor times from M-time to AP-time and add a cap. Some of the vehicle listed in the model statement above may exhibit at least one…
- 11019888Jun 25, 2025Some of the vehicles listed in the Model statement above may exhibit the condition that the traction control feature cannot be turned off/disabled through the vehicles center…
Fuel system: other model years
Other parts of the 2021 Ford Mustang Mach E
155 complaintsForward collision avoidance
106 complaintsTransmission and drivetrain
53 complaintsOther or unknown
50 complaintsVehicle speed control
37 complaintsBrakes
32 complaintsLane departure
31 complaintsVisibility (wipers, defrost, mirrors)
20 complaintsEngine
17 complaintsSteering
15 complaintsBack-over prevention (rear camera)
8 complaintsBody and structure
7 complaints
← All problems reported for the 2021 Ford Mustang Mach E
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology