Erratic shifting, bucking, and lunging at low speeds and during downshifts. Estimated repair cost: $1,000 - $3,000.

Electrical System Malfunctions

Instrument cluster blanking, charging system errors, loss of power steering, and inadvertent system activation. Estimated repair cost: $300 - $1,500.

Engine stalling while driving or difficulty starting. Estimated repair cost: $400 - $800.

Airbag warning light illuminated. Estimated repair cost: $500 - $1,500.

CARFOCALvehicle research

2021 Ford Mustang Maintenance guide

Name: Maintenance dataset for 2021 Ford Mustang
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed8 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Ford Mustang's maintenance profile is dominated by concerns in its powertrain and engine systems, with owners reporting erratic shifting and power loss. Diligent adherence to service schedules, focusing on regular inspections of the transmission, engine control module, and emission systems like the EVAP purge valve, is critical for mitigating potential early-life failures.

View Critical Issue: Engine Performance Issues

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Reliability Score

Est. Annual Maintenance Cost

$1,000 - $1,500

TSBs & Recalls

19 TSBs | 11 Recalls

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Key Takeaways

Prioritize addressing all open recalls, especially those concerning fuel pumps and airbags.
Regularly inspect the powertrain and engine for signs of distress, such as erratic shifting or power loss.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance