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5-Year Test of 500,000 EV Batteries Including Tesla Finds Best Aging

Tesla logoTesla
Sig1.90Sen0.00Env0.00Soc0.00Gov0.00
Ford logoFord
Sig1.45Sen+3.20Env+1.10Soc0.00Gov0.00
BMW logoBMW
Sig2.65Sen+2.40Env+0.80Soc+0.20Gov0.00

A five-year diagnostics study tracked capacity fade and degradation in 500,000 EV batteries across 20 popular models. In the 50km test, the Hyundai Ioniq 5 retained a median 97% of capacity, narrowly ahead of the Mercedes-Benz EQA at 96.56%. Most models scored above 90%, and the 150km test topped with the EQA at 93.97%.

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