🛡️ EV Research Tool

EV Battery Warranty Rankings

Every electric vehicle's battery warranty scored and ranked. Compare coverage duration, mileage limits, degradation protection, and fine print — all in one place.

Vehicles Ranked

Industry Average

82/100

Best Warranty

Mercedes-Benz EQS

Score: 94/100

Coverage

How We Score Warranties

Each warranty is scored on a 100-point scale across five weighted factors: Duration (25 pts) — longer coverage scores higher, with 10 years being the maximum. Mileage (25 pts) — based on 175K miles as the benchmark; unlimited miles earns full marks. SOH Floor (25 pts) — higher minimum capacity guarantees score better; graduated thresholds (like Porsche's 80%→70%) earn the most. Degradation Coverage (15 pts) — warranties that cover gradual capacity loss (not just total failure) earn full marks. Transferability (10 pts) — warranties that follow the vehicle to subsequent owners score higher, which matters for resale value. All data is sourced from official manufacturer warranty documentation and verified against multiple sources.

Last updated: 2026-04-09

Frequently Asked Questions

What does an EV battery warranty typically cover?

Most EV battery warranties cover manufacturing defects and excessive capacity loss. If your battery drops below the manufacturer's minimum threshold (typically 70% of original capacity), they will repair or replace the battery pack at no cost.

Do EV battery warranties transfer to second owners?

Most EV battery warranties are transferable and follow the vehicle, not the original owner. Notable exceptions include the Volkswagen e-Golf. The warranty clock starts from the original in-service date, so used buyers inherit whatever time and mileage remains.

Which EV has the best battery warranty?

The Mercedes-Benz EQS and EQE lead the industry with 10-year/155,000-mile coverage. Hyundai, Kia, and Genesis also stand out with 10-year/100,000-mile warranties. Rivian offers the highest mileage coverage at up to 175,000 miles for Quad Motor configurations.

What does the SOH (State of Health) percentage mean in a battery warranty?

SOH percentage is the minimum battery capacity the manufacturer guarantees. A 70% SOH floor means if your battery degrades below 70% of its original usable capacity within the warranty period, the manufacturer will repair or replace it. Higher SOH floors provide better protection.

Does DC fast charging void my EV battery warranty?

In most cases, no. Tesla explicitly states that Supercharging does not void the warranty. However, Audi warns that frequent consecutive DC fast charging can permanently decrease capacity and may not be covered. Always check your specific manufacturer's terms.