2021 Ford Mustang Mach-E
Vehicle Specs & Maintenance Data
The 2021 Ford Mustang Mach-E maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Ford Mustang Mach-E.
For oil changes, the 2021 Ford Mustang Mach-E takes 5W-20 Full Synthetic motor oil with a capacity of 8 quarts. Brake fluid type is DOT 3, the recommended coolant is Motorcraft Gold (OAT), and transmission fluid is N/A (Electric). Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Ford Mustang Mach-E, torque the lug nuts to 150 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Ford Mustang Mach-E have reported 5 common issues including "12V Battery Drain and No-Start Condition", "Windshield Cracking from Manufacturing Stress" and "SYNC 4A / BlueCruise Software Glitches and Freezes". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
There are 6 NHTSA safety recalls on file for the 2021 Ford Mustang Mach-E. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Ford Mustang Mach-E uses 5W-20 Full Synthetic motor oil (8 qt capacity), requires lug nuts torqued to 150 ft-lbs, takes DOT 3 brake fluid.
Manufacturer-recommended maintenance schedule for the 2021 Ford Mustang Mach-E. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Ford Mustang Mach-E.
Common problems reported by 2021 Ford Mustang Mach-E owners, with recommended fixes and estimated repair costs.
12V Battery Drain and No-Start Condition
The 12V auxiliary battery drains excessively, leaving the vehicle unable to start or operate its power systems. The Mach-E relies on the 12V battery to activate the high-voltage contactors that power the drive motor, so a dead 12V battery renders the vehicle completely inoperable. This is the most reported issue on NHTSA for the 2021-2022 Mach-E.
Ford issued TSB 22-2064 and subsequent updates addressing the 12V battery drain. The dealer will update the battery management and body control module software to reduce parasitic draw. Replace the 12V battery if it has been deeply discharged. Ford extended the 12V battery warranty on affected models.
Est. Cost: $0 for software update; $200 - $400 for 12V battery replacementWindshield Cracking from Manufacturing Stress
The panoramic glass roof and front windshield develop cracks without any impact event. Owners report finding long stress cracks appearing overnight or during temperature changes. The cracks typically originate from the edges where the glass meets the frame, suggesting a manufacturing bonding or stress issue.
File a warranty claim with your dealer. Ford has replaced windshields under warranty for cracks originating from the edge without visible impact points. Document the crack with photos immediately. Some owners have had multiple replacements on the same vehicle.
Est. Cost: $0 under warranty; $800 - $1,500 for windshield replacement out of warrantySYNC 4A / BlueCruise Software Glitches and Freezes
The SYNC 4A infotainment system experiences frequent freezing, slow response, phantom touch inputs, and random reboots. BlueCruise hands-free driving may disengage unexpectedly or become unavailable. Over-the-air updates occasionally fail midway, leaving the system in a partially updated state.
Ford has released multiple OTA software updates to address stability issues. If the system is stuck in a failed update state, the dealer can perform a forced reinstall. Reset the SYNC system by holding the power and right-seek buttons for 10 seconds. For persistent issues, the APIM may need replacement.
Est. Cost: $0 for OTA updates; $800 - $1,800 for APIM replacementHigh-Voltage Battery Contactor Failure (Recall)
A manufacturing defect in the high-voltage battery main contactors can cause them to overheat and weld shut, potentially resulting in a loss of drive power or a no-start condition. In severe cases, the overheated contactor can damage the battery pack and create a fire risk.
Ford issued recall 22S41 for 2021-2022 Mustang Mach-E vehicles. The dealer will inspect the high-voltage battery contactors and replace the battery junction box as necessary. Contact your dealer to verify your VIN. The repair is free of charge.
Est. Cost: Covered under recallFront Motor/Subframe Bolt Loosening (Recall)
The front electric motor mounting bolts on certain 2021-2022 Mach-E vehicles may not have been torqued to specification during assembly. Loose bolts can cause the subframe to shift, resulting in unusual noises, vibrations, and in extreme cases loss of drive power or steering control.
Ford issued recall 22S36 to inspect and re-torque the front subframe mounting bolts. If the bolts have backed out or the subframe has shifted, additional components may need replacement. Contact your dealer to verify your VIN. The repair is free of charge.
Est. Cost: Covered under recall6 NHTSA safety recalls for the 2021 Ford Mustang Mach-E. Check your VIN at NHTSA.gov
ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
Ford Motor Company (Ford) is recalling certain 2021-2023 Mustang vehicles repaired incorrectly under recall number 23V727. The brake fluid level sensor may not activate the visual warning indicator when the brake fluid is low. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."
Without a low brake fluid warning light, the vehicle may be driven with low brake fluid, reducing braking performance and increasing the risk of a crash.
Dealers will update the body control module software, free of charge. Owner notification letters were mailed December 11, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25C55. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 17, 2025.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Ford Motor Company (Ford) is recalling certain 2021-2023 Bronco, Explorer, Lincoln Aviator, F-250 SD, F-350 SD, F-450 SD, F-550 SD, 2021-2022 Lincoln Navigator, Mustang, F-150, and 2022 Expedition vehicles. The low-pressure fuel pump may fail, which can result in an engine stall while driving.
An engine stall increases the risk of a crash.
The remedy is under development. Interim notification letters notifying owners of the safety risk were mailed July 16, 2025. Second letters will be sent once the remedy is available, anticipated March 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S75.
BACK OVER PREVENTION:SOFTWARE
Ford Motor Company (Ford) is recalling certain 2018-2022 Transit Connect, 2019-2020 MKZ, MKX, Edge, Continental, F-150, Nautilus, Fusion, 2019-2023 Ranger, Mustang, 2020-2021 EcoSport, Expedition, Navigator, 2020-2022 Escape, F-250 SD, Corsair, 2020-2023 Aviator, Transit, 2020-2024 Explorer, 2021-2024 Bronco Sport, and 2022-2024 Maverick vehicles. A software error may cause the rearview camera to display a blank image, or the image may remain on the display after the backing event has ended.
A rearview camera that displays a blank image can reduce the driver's view behind the vehicle. A rearview image that continues to be displayed after the vehicle is shifted out of reverse may distract the driver. Both of these situations can increase the risk of a crash.
Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed September 4, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S72.
ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
Ford Motor Company (Ford) is recalling certain 2020-2023 Mustang vehicles. The brake fluid level sensor may not activate the visual warning indicator when the brake fluid is low. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."
Without a low brake fluid warning light, the vehicle may be driven with low brake fluid, reducing braking performance and increasing the risk of a crash.
Dealers will update the body control module software, free of charge. Owner notification letters were mailed December 21, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23C35.
AIR BAGS:KNEE BOLSTER
Ford Motor Company (Ford) is recalling certain 2021-2022 Mustang vehicles. An insufficient weld on the front passenger knee air bag may result in an improper air bag deployment.
An improper air bag deployment can increase the risk of injury during a crash.
Dealers will replace the front passenger knee air bag, free of charge. Owner notification letters were mailed on March 8, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S07.
AIR BAGS:SIDE/WINDOW:CURTAIN
Ford Motor Company (Ford) is recalling certain 2021 Mustang vehicles. The side curtain air bag inflators may have been manufactured with the incorrect amount of compressed gas, which can result in improper air bag inflation. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 226, "Ejection Mitigation," and 214, "Side Impact Protection."
An air bag that does not inflate properly can increase the risk of injury in a crash.
Dealers will replace the side curtain air bags, free of charge. An interim owner notification letter was mailed on February 3, 2022. Owner notification letters were mailed on April 22, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C37.