Understanding EV Battery Warranties: What They're Worth and What to Watch
EV battery warranties vary dramatically between automakers. We explain what they cover, what they don't, and how to evaluate battery health over time.
Every electric vehicle sold in the United States comes with a battery warranty — but the terms vary so dramatically between manufacturers that comparing them is nearly impossible without careful analysis. Here’s what you need to know about EV battery warranties.
What the Standard Means
The U.S. federal minimum warranty for EV batteries is 8 years/100,000 miles, covering battery capacity below 70 percent of original rated capacity. This is a floor — most manufacturers offer more.
Battery Warranties by Manufacturer
Tesla: 8 years / 100,000-150,000 miles (varies by model)
- Model 3/Y: 8 years, 100,000 miles (standard range), 120,000 miles (long range)
- Model S/X: 8 years, 150,000 miles
- Warranty covers capacity below 70% of original
Hyundai/Kia: 10 years / 100,000 miles
- Covers battery capacity below 70% for the full 10 years
- Best warranty in the industry
GM (Chevrolet): 8 years / 100,000 miles
- Covers battery capacity below 70%
Ford: 8 years / 100,000 miles
- Covers battery capacity below 70%
Rivian: 8 years / 150,000 miles
- Covers battery capacity below 70%
BMW: 8 years / 100,000 miles
- Covers battery capacity below 70%
Mercedes: 8 years / 100,000 miles
- Covers battery capacity below 70%
What Warranties Don’t Cover
Battery warranties cover capacity loss due to manufacturing defects — not degradation from normal use. If your battery loses 5 percent of capacity in 50,000 miles, that’s normal wear and not covered. If it loses 40 percent in the same period due to a defective cell, that’s covered.
The critical distinction is between:
- Defect-related degradation: covered
- Normal degradation: not covered
How to Monitor Battery Health
Most EVs provide battery health information in the settings menu or through the manufacturer’s app. Third-party apps like TeslaFi (for Tesla vehicles) and Car Scanner (for some non-Tesla vehicles) can provide more detailed battery health data.
The most useful metric is “design capacity vs. current capacity” — how much of the original battery’s energy storage is still available.
For more on EV technology, see our battery technology explainer.
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