Ford Mustang Mach-E Batteries Show Strong Durability After 100,000 Miles
Ford's extensive research involving 36,000 Mustang Mach-E vehicles has shed light on the longevity and durability of their electric vehicle batteries, offering reassuring insights for prospective EV owners. The study, which collected data from 2021 models across the U.S. and Canada, directly addresses common concerns about battery degradation, demonstrating that these vehicles maintain a high percentage of their original capacity even after considerable mileage. This scientific validation underscores the advancements in EV battery technology and suggests that electric cars are a sound long-term investment.
A primary apprehension among those considering electric vehicles often revolves around battery lifespan and the potential for diminished range over time, similar to how smartphone batteries degrade. However, Ford's findings present a compelling counter-narrative. The study revealed that, on average, the Mach-E SUVs, after traveling approximately 55,000 miles over 5.2 years, retained an impressive 92% of their usable battery capacity. This means that a 2021 Mach-E model, initially rated for 305 miles of range, would theoretically still offer about 280 miles today. All vehicles included in this analysis utilized nickel-cobalt-manganese (NCM) battery packs, as lithium-iron-phosphate (LFP) options were not introduced for the Mach-E until the 2023 model year.
Kevin Vander Laan, Ford's technical leader for high-voltage battery cells and systems, emphasized the significance of real-world data beyond laboratory predictions. He noted that while internal testing and computer models forecast battery degradation, the true measure comes from vehicles in active service. He proudly stated that the five-year performance review for the Mach-E batteries is exceptionally positive. The data further indicated that even vehicles with exceptionally high mileage showed robust battery health. Over 2,000 SUVs with more than 100,000 miles on their odometers still retained over 91% of their battery capacity, and a smaller group of more than 30 vehicles that had surpassed 200,000 miles maintained 88% battery health.
It is important to acknowledge that individual results can vary based on several factors. Environmental conditions, such as extreme heat in regions like the American Southwest, can accelerate battery aging. Additionally, charging habits play a crucial role; frequent fast charging to 100% and discharging to near-empty levels typically lead to faster wear compared to maintaining a charge between 20% and 80%. Despite these variables, Ford's engineers are encouraged by the overall distribution of results, with 95% of the 36,000 vehicles falling within an 87% to 97% battery health range.
These findings align with broader industry research, which generally indicates that modern EVs age gracefully, a significant improvement over early electric models that sometimes faced rapid degradation due to less advanced thermal management systems. Companies like Recurrent, which monitors range retention in used EVs, report that electric vehicles typically retain 97% of their original range after three years and 95% after five years. Another study by Aviloo, a battery-health startup, also showed similar results, with most models retaining 90% to 94% health after 93,000 miles, placing the Mustang Mach-E squarely in the impressive range. Ford continues to advise owners on best practices to prolong battery life, including temperature management and judicious use of fast chargers. The insights gained from this extensive study are being channeled into the development of Ford's future electric vehicles, ensuring continuous learning and improvement in battery technology.