The norm
Nearly every EV sold in the US has at least 8 years or 100,000 miles of battery coverage. Some go further: Hyundai and Kia cover 10 years or 100,000 miles. Each model page shows the terms we could confirm.
Read the fine print
- Most makers replace or repair only below a set capacity, often 70%. Losing 20% may not qualify.
- Check if the warranty transfers to a second owner. Most do, but not always all of it.
- Check the charging rules. Some makers set conditions.
California and the other ZEV states
You will read that California requires 10 years or 150,000 miles on EV batteries. The CARB documents we read do not support that for battery-electric cars: under the state's Advanced Clean Cars II rules that figure is a durability target, and the warranty is 8 years or 100,000 miles. Those rules are also tied up in a federal fight. Go by the warranty booklet for your car.
How batteries actually age
Most cars lose capacity slowly. For a used car, ask for a state-of-health report. See the used EV checklist.