Ford says 2021 Mach-E batteries kept 92 percent health on average

Ford says 2021 Mustang Mach-E batteries have kept 92 percent of their health on average after five years. The company posted the figures on November 9. The reading is as of August 2026 and covers usable battery capacity.

The set is the full retail and fleet group sold in the United States and Canada. Ford counts more than 36,000 vehicles and an average ownership period of 5.2 years. Those vehicles have driven two billion all-electric miles, in all 50 states and in Canada. Ninety-five percent of those vehicles fall between 87 percent and 97 percent health.

Higher-mileage cars in the same group are close to that average. More than 2,000 owners have passed 100,000 miles on the original battery, and Ford says that group is averaging better than 91 percent health. A smaller set, more than 30 drivers past 200,000 miles, is averaging 88 percent. The company says the figures come from its connected-vehicle data, aggregated and anonymized.

Ford also gives a wider battery-electric figure. Across the battery-electric lineup it has sold in the United States and Canada over the last five years, it says the packs are designed to last at least 10 years and are keeping, on average, more than 90 percent health at 100,000 miles. It ties that line to a 2026 field study. The 2021 Mach-E packs in this data set use NCM chemistry. Ford says this is its first mass-produced modern electric vehicle, and the only modern Ford EV group old enough for five full years at this scale. Kevin Vander Laan, the company's technical leader for high-voltage battery cells and systems, wrote the post. It does not give a replacement rate or a count of failed packs.