Public debate on the safety of electric vehicles frequently erupts on the topic of battery fires, but data tells a very different story. Data from several countries shows electric vehicles are not only less likely to catch fire than gasoline-powered cars, but are dramatically safer in this regard. In fact, statistics from Tesla’s worldwide fleet from 2012 through 2021 reveal a per-mile fire rate 11 times lower than the U.S. average for all vehicles. Independent analyses point to the same basic trend: Norway’s Directorate for Social Security and Emergency Preparedness found four to five times more fires in gasoline and diesel cars compared with EVs; Sweden’s Civil Contingencies Agency reported just 3.8 fires per 100,000 EVs and hybrids versus 68 per 100,000 for all vehicles; and the Australian Department of Defense calculated an EV battery fire probability of 0.0012% versus 0.1% for ICE vehicles.
But despite this, public perception is still skewed. The media reports of EV fires have been highly visible, often dramatic, with burnt cars emblazoned across sensational headlines. Gasoline car fires happen every day, in much greater numbers, but never draw that sort of attention. This skewed visibility only serves to perpetuate the myth of EVs as being inherently hazardous when, in fact, their design and engineering make them among the safest vehicles ever built.
Present-day EV battery packs boast an array of built-in protections. The manufacturers test them under harsh conditions by inducing thermal runaway, passing them through crashes and punctures, extremely high-low temperatures, and even submerging them in water. Advanced cooling systems, fire-resistant materials, and built-in automatic shut-down mechanisms add to the security. In the US, the Department of Energy requires that all EVs pass the very same Federal Motor Vehicle Safety Standards as gasoline-powered cars, but in practice, the majority of the rules applying to EVs are actually far more specific due to their high-voltage systems. These packs sit in robust casings for protection; high-voltage wires are covered, and systems are engineered to shut down in case of collision or electrical fault.
Thermal runaway is the self-sustaining reaction capable of overheating a battery to the point of ignition. This is a known risk in lithium-ion technology but is relatively rare in automotive-grade packs. Engineering strategies to mitigate thermal runaway are extensive: robust separators, non-flammable electrolytes, liquid or air cooling, and thermal barriers such as LithiumPrevent that prevent heat propagation between cells. Early detection technologies-like VOC sensors capable of identifying electrolyte breakdown gases minutes before a temperature spike-provide critical time for operators to isolate failing modules or activate suppression systems.
First, it’s worth distinguishing EVs from the rest of the micromobility sector-e-bikes and scooters-that frequently use cheaper, poorly regulated batteries. When those catch fire, they fuel public anxiety about “battery fires” in general, but they aren’t representative of automotive standards. The U.S. is moving in the direction of mandatory UL safety standards on micromobility batteries, with proposed legislation directing the Consumer Product Safety Commission to enforce UL 2271, UL 2272, and UL 2849 compliance within 180 days of enactment. That would help narrow the gap between consumer-grade and automotive-grade battery safety.
When EV fires do occur, they present unique challenges. Lithium-ion battery fires can reach temperatures over 1,200°F, produce toxic gases like hydrogen fluoride and methane, and may reignite hours or days later. Suppression often requires large volumes of water or specialized agents, and post-fire monitoring with thermal imaging is required. However, these complexities do not translate to higher frequency-only to different firefighting protocols compared to ICE vehicle fires, which peak at about 600°F and are generally easier to extinguish once fuel is depleted.
Other areas where engineering plays a role in prevention involve home charging safety. Certified smart chargers reduce risks for unattended and overnight charging by having overcurrent protection, temperature monitoring, and automatic shutoff. Best practices include installing dedicated circuits, avoiding using extension cords, and charging in well-ventilated areas.
After all, the lithium-ion chemistry powering EVs is identical to what resides in billions of smartphones, laptops, and tablets used day in and day out with almost nonexistent incident rates. Yet, automotive packs are built to far more stringent standards with layers of redundancy and containment strategies. If society can trust these batteries in pockets and homes, there is even greater reason to trust them under the floor of a vehicle-protected by some of the most advanced safety systems in modern engineering.