The National Highway Traffic Safety Administration (NHTSA) is currently investigating multiple EV battery fire incidents affecting over 150,000 vehicles from General Motors, Hyundai, and Ford. These investigations, opened between late 2024 and early 2025, focus on thermal runaway events in lithium-ion battery packs that occurred during charging and post-collision scenarios. NHTSA’s Office of Defects Investigation has identified 47 reported fire incidents with three injuries, prompting expanded safety reviews across multiple manufacturers.

What Are the Main Causes Behind Recent EV Battery Fires?

According to NHTSA’s preliminary findings, manufacturing defects in battery cell separators and battery management system failures are the primary culprits. GM’s Chevrolet Bolt recall involved 142,000 vehicles due to two simultaneous manufacturing defects that could trigger thermal runaway. Dr. James Chen, automotive fire safety researcher at SAE International, notes: “We’re seeing a pattern where quality control lapses during high-volume production create cascading failure risks that weren’t present in earlier, smaller production runs.”

How Do EV Fire Rates Compare to Gasoline Vehicles?

Despite headline-grabbing incidents, data shows EVs catch fire at significantly lower rates than gasoline vehicles. According to a 2024 study by the Insurance Institute for Highway Safety (IIHS), EVs experience 25 fires per 100,000 sales compared to 1,530 fires per 100,000 for gasoline vehicles—a 60-fold difference. However, EV fires burn hotter and require specialized firefighting approaches, creating unique challenges for first responders.