A study of real-world electric vehicle performance suggests that fears over rapid battery degradation may be overstated, with most modern EVs retaining the vast majority of their original driving range after three years on the road.
The analysis was conducted by U.S.-based data firm Recurrent, which tracks battery health across thousands of electric vehicles. The company found that while some range loss does occur over time, the decline is generally modest and follows a predictable pattern.
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Cadillac, Hyundai and Mercedes-Benz ranked among the strongest performers in the study, showing little to no measurable loss in range after three years. Tesla vehicles also performed strongly, retaining more than 96% of their original range over the same period, according to the data.
Brands that showed comparatively higher levels of range loss included Volkswagen, BMW and Jaguar. However, even those vehicles typically maintained more than 90% of their original range. Recurrent said the lower averages likely reflect the inclusion of older EV models using earlier-generation battery technology, such as the BMW i3 and Jaguar I-Pace.
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Much of the strong performance is attributed to battery management strategies used by automakers. Modern EVs often include built-in battery “buffers,” where a portion of capacity is reserved and gradually unlocked by software as the battery ages. Software updates can also improve vehicle efficiency through changes to regenerative braking and power management, helping offset natural battery wear.
The study also found that battery degradation tends to be front-loaded, with the largest drop in range occurring in the first few years before stabilizing. Importantly, Recurrent measured real-world driving range rather than relying on official EPA ratings.
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Liz Najman, an analyst at Recurrent, said many EVs exceed their official range estimates early in their life cycle. “This should be a ‘wonderful surprise’ for new owners,” Najman said, noting that most vehicles remain at or above their EPA-rated range for many years.
As the global EV fleet matures and more long-term data becomes available, researchers say the evidence increasingly points to durable battery performance, challenging one of the most persistent concerns about electric vehicle ownership.