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2021–2023 Ford Mustang Mach-E

Browse our directory of 2021–2023 Ford Mustang Mach-E vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.

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Common Problems & Reliability

1
Serious
1
Moderate
2
Minor

The 2021–2023 Ford Mustang Mach-E has 4 known issues. 1 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.

High Voltage Battery Junction Box (HVBJB) Failure

Serious

The main high-voltage contactors can overheat and weld shut or stick open, especially after rapid acceleration or DC fast charging. This results in a sudden loss of motive power.

Symptoms: "Stop Safely Now" message, Total loss of drive...

Est. repair cost: £0 (Under Warranty/Recall)

Charging System Faults and 12V Battery Issues

Moderate

The Mach-E relies on a small 12V auxiliary battery to power the charging contactors and control modules. If the 12V drops below 11.5V, charging will not start even though the main battery is full. Charge port actuator failures and onboard charger faults also cause charging to fail or stop mid-session.

Symptoms: Unable to charge or Charging fault message, Charge port door will not open...

Est. repair cost: £60-£500

Software and SYNC 4A Infotainment Glitches

Minor

The 15.5-inch touchscreen may freeze, go blank or lag badly, temporarily knocking out climate control and drive-mode controls. Apple CarPlay audio can cut out, rearview cameras can freeze and driver-assistance features can temporarily go offline.

Symptoms: Frozen or black central screen, Apple CarPlay audio cutting out...

Est. repair cost: £0-£400

Build Quality and Wind Noise

Minor

Early Mach-E builds drew criticism for inconsistent panel gaps, wind noise around mirrors and A-pillars at highway speeds, paint imperfections and interior creaks and rattles. By 2024 Ford factory processes had improved but these issues still show up in the used pool.

Symptoms: Wind noise around mirrors or A-pillars at speed, Creaky dashboard or buzzing door panels...

Est. repair cost: £0-£500

View detailed Ford Mustang Mach-E fault guide

Buying Tips for the 2021–2023 Ford Mustang Mach-E

  • ✓Ask the seller if the High Voltage Battery contactors (HVBJB) recall/fix has been performed; this is critical
  • ✓Test the SYNC 4A massive central touchscreen for lag or unresponsiveness
  • ✓Check the electronic door push-buttons; they can freeze in cold weather or fail entirely

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