One of the oldest fears about electric cars — that the battery will degrade quickly and force an expensive replacement — is looking increasingly outdated, according to new data from EV analytics firm Recurrent.
The company analyzed over one billion miles of real-world EV driving and found that the average vehicle retains 97% of its original range after three years and 95% after five. Even among the hardest-used vehicles, degradation has proven far gentler than early forecasts suggested. A separate Recurrent analysis found the battery replacement rate for EVs with model year 2022 and later is just 0.3% — replacement is vanishingly rare among modern cars.
The findings matter because battery longevity underpins both the resale value of used EVs and the broader argument that electric cars are a cheaper long-term proposition than combustion vehicles. Thermal management systems, more conservative charging curves and better battery chemistry have all contributed to the improvement over the last decade.
Automakers still publish conservative warranties — many guarantee 70% capacity for eight years — but the real-world data suggests most batteries will far outlast those terms. For buyers weighing a used EV, the message is increasingly simple: the battery is the least of your worries.
