Hybrid and electric vehicles (EVs) are marketed as reliable, low-maintenance alternatives to gas-powered cars. But when the high-voltage battery system fails, repairs can cost $8,000 to $25,000 or more.

If your hybrid or EV battery keeps malfunctioning — and the dealership can’t permanently fix it — your vehicle may qualify under your state’s Lemon Law or the federal Magnuson-Moss Warranty Act.

Common Hybrid & EV Battery Problems

Battery defects don’t always mean complete failure. Many problems start gradually.

1. Rapid Loss of Driving Range

If your EV’s range drops significantly below advertised estimates — especially early in ownership — this may indicate battery degradation or defective cells.

2. Failure to Hold a Charge

If your vehicle won’t fully charge, loses charge unusually fast, or displays charging errors, the battery management system may be defective.

3. Warning Lights or “Service High Voltage System” Messages

Repeated battery system warnings that return after repairs can strengthen a Lemon Law claim.

4. Sudden Loss of Power

If the vehicle enters “limp mode,” limits acceleration, or shuts down unexpectedly, this can be a serious safety concern.

5. Complete Battery Failure

Total battery replacement shortly after purchase often supports a strong claim.

Are EV and Hybrid Batteries Covered Under Lemon Law?

Yes — in most states, if:

• The defect substantially impairs use, value, or safety
• The manufacturer had a reasonable number of repair attempts
• The issue occurred during the warranty period

Most manufacturers offer extended battery warranties (often 8 years/100,000+ miles). That warranty coverage may also trigger protection under the Magnuson-Moss Warranty Act.

What If the Dealership Says “Battery Degradation Is Normal”?

Manufacturers often argue that battery degradation is expected. But abnormal or premature degradation — especially compared to similar vehicles — may qualify as a defect.

If your range drops dramatically within the first few years, it may not be “normal wear.”

What Compensation May Be Available?

Depending on the facts, you may be entitled to:

• A buyback (refund minus mileage offset)
• A replacement vehicle
• Cash compensation
• Attorney’s fees paid by the manufacturer

Given the high cost of EV battery repairs, early legal evaluation is critical.

Don’t Wait Until the Warranty Expires

Battery systems are the most expensive component in hybrid and electric vehicles. If problems persist, you may not have to live with repeated repairs.

If your hybrid or EV battery keeps failing, your vehicle may be a lemon.