Real-World Data Confirms: EV Batteries Last 13 Years with Just 2.3% Annual Degradation

A new study by Geotab, a Canadian fleet management company, reveals that based on real-world usage data from over 22,700 electric vehicles (EVs) across 21 brands, EV batteries degrade at an average annual rate of just 2.3%, suggesting a potential lifespan of 13 years or longer. This means that after more than a decade of use, battery capacity can still remain around 75%. The study notes that battery degradation is influenced by factors such as vehicle model, charging method, climate, and driving habits. Specifically, DC fast charging—due to the higher temperatures it generates—accelerates battery degradation more than slower AC charging. Although Geotab’s 2024 report indicated an average annual degradation rate of 1.8%, the 2025 figure has slightly increased due to a larger sample size and a higher proportion of fast-charging usage. Additionally, the study highlights that EVs begin reducing their carbon footprint as early as two years after entering service, demonstrating significant environmental benefits. Geotab concludes that EVs are now a practical and viable option for both individual drivers and fleet operators alike.