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Ford Analyzes Battery Health Across 36,000 Mustang Mach-E Vehicles
Ford analyzed battery health data from 36,000 Mustang Mach-E vehicles covering around two billion electric miles.
After an average of 5.2 years, the vehicles retained approximately 92% of their usable battery capacity.
Ford recommends using Level 2 charging for daily driving, limiting unnecessary DC fast charging, and following vehicle-specific charging guidance.
Ford’s five-year review of the 2021 Mustang Mach-E provides one of the clearest real-world looks at electric vehicle battery durability. The analysis covers more than 36,000 Mustang Mach-E vehicles sold to retail and fleet customers in the United States and Canada. Together, these vehicles have traveled approximately two billion all-electric miles, giving Ford a large amount of data on how the batteries perform over time.
According to Ford, the vehicles retained an average of 92% of their usable battery capacity after an average ownership period of 5.2 years. Most vehicles recorded battery health between 87% and 97%. This range is important because an average alone may not show how much battery performance varies between individual vehicles.
High-mileage owners also reported strong results. More than 2,000 Mustang Mach-E vehicles had passed 100,000 miles, while maintaining an average battery health of more than 91%. More than 30 vehicles had traveled over 200,000 miles, and this group retained an average of about 88% battery health. One owner, David Blenkle, reached more than 400,000 miles in a 2022 Mustang Mach-E using the original battery.
Ford says battery performance can be supported by following a few practical charging habits. For daily driving, owners can use Level 2 charging at home and save DC fast charging for longer journeys or situations when rapid charging is needed. Preconditioning the vehicle while it is still connected to a charger can help manage temperature, and parking in the shade during hot weather may reduce exposure to extreme heat. The Ford app also provides charge-level recommendations based on the specific vehicle and battery system.
The 2021 Mustang Mach-E uses an NCM battery chemistry, so charging to 100% is generally unnecessary for everyday use. Ford notes that some newer EVs use LFP batteries, which may benefit from an occasional full charge to help the battery-management system remain properly calibrated.
The results do not mean that every Mustang Mach-E battery will show exactly the same level of performance. Driving patterns, climate, mileage, charging habits, and vehicle usage can all affect battery health. However, data from 36,000 vehicles and two billion miles suggests that the Mustang Mach-E’s battery system can maintain strong usable capacity through years of regular driving. Ford’s report states that the figures are based on aggregated battery-health data available as of August 2026.
