On a used electric car, state of health (SoH) — how much usable capacity the battery has versus new — matters more than the odometer. A high-mileage EV with a healthy battery can be a better buy than a low-mileage one that was fast-charged hard.
What good looks like
- 90%+ SoH — excellent, typical of a well-kept car under ~3 years.
- 80–90% — normal, healthy degradation for most used EVs.
- Below 80% — investigate; range loss becomes noticeable and it may approach warranty thresholds.
Questions to ask
- Is the battery still under the manufacturer warranty (often 8 years / 100k miles to ~70% SoH)?
- Was it mostly slow/home charged, or rapid-charged daily?
- Can the seller show a recent battery health readout?
Verdari surfaces an estimated battery state-of-health on EV reports so you can compare cars on what actually matters.