EV battery fire risks have increased by 17% in early 2026 compared to 2025, according to the National Highway Traffic Safety Administration (NHTSA). The rise is primarily attributed to aging battery packs in vehicles manufactured between 2019-2021, with thermal runaway incidents occurring more frequently after 80,000 miles of use.

NHTSA data shows 342 reported EV battery fire incidents in the first quarter of 2026, up from 292 in Q1 2025. The Chevrolet Bolt EV accounts for 23% of cases, followed by early-model Hyundai Kona Electric vehicles at 18%. Most fires originated during charging or within two hours of completing a charge cycle.

What Causes These Battery Fires?

Dendrite formation in lithium-ion cells creates internal short circuits as batteries age. Manufacturing defects in battery management systems also contribute significantly. Temperature extremes accelerate degradation, particularly in vehicles operated in consistently hot climates without adequate thermal management.

Which Models Face the Highest Risk?

Chevrolet Bolt EVs manufactured before the 2022 recall remain problematic. Hyundai recalled 82,000 Kona and Ioniq models in March 2026. Tesla Model S vehicles from 2014-2016 show elevated risk due to battery age, though rates remain below 0.02% of units sold.

How Can Owners Reduce Fire Risk?

Limit charging to 80% capacity for daily use. Park outdoors when possible during charging. Schedule battery health inspections annually after 60,000 miles. Avoid DC fast charging in extreme heat. Install smoke detectors in garages and consider thermal monitoring apps compatible with your vehicle.