Sales of electric vehicles have accelerated at a pace few predicted even five years ago. In 2024, EVs accounted for roughly 8% of new car sales in the United States, up from 2% in 2020. That growth brings a lot of attention from policymakers, automakers, and consumers. But as someone who spent 15 years investigating vehicle defects at NHTSA, I watch the sales of electric vehicles with a specific question: what does the safety data show as these cars become more common on American roads?
The Numbers Behind the Surge
The raw statistics are striking. According to industry data, U.S. EV sales passed the one-million-unit mark for the first time in 2023, and the trend continued upward in 2024. Automakers are investing billions in new battery plants and EV platforms. Federal incentives, state-level mandates, and falling battery costs are all driving adoption. But the climb in sales of electric vehicles has been accompanied by a parallel increase in recall activity, particularly around battery systems.
What NHTSA Filings Reveal About Battery Risks
Reading NHTSA's recall filings carefully, what stands out is a pattern of thermal events — fires or smoke from high-voltage batteries — across multiple manufacturers. In 2023 alone, there were over a dozen recall campaigns involving battery defects. Some were tied to manufacturing contamination inside cells; others to software that failed to detect overcharge conditions. One filing from a major automaker involved more than 60,000 vehicles with a risk of short circuit under certain charging scenarios. The filing number, exact range of VINs, and three concrete steps were all right there in the public docket.
None of this means EVs are inherently more dangerous than gasoline cars. In fact, the rate of fire per mile driven may be lower for EVs. But the nature of the risk is different. A gasoline fire spreads gradually. A lithium-ion battery thermal runaway can happen without warning, releasing toxic fumes and burning at extreme temperatures. For emergency responders, that poses new challenges. NHTSA has issued guidance on handling EV fires, but training is not universal.
What Owners Should Do
If you own an EV, or are considering one, here's what the data shows. First, check NHTSA's recall website monthly by entering your VIN. Some battery-related recalls have been slow to reach owners through the mail. Second, if you notice a sudden drop in range, a burning smell, or unusual heat from the battery pack, do not ignore it. Pull over, exit the vehicle, and call for help. Third, understand your battery warranty. Federal regulations require an 8-year/100,000-mile warranty on EV batteries, but coverage details vary by manufacturer.
Auto insurers are also paying attention. As sales of electric vehicles grow, some carriers have adjusted premiums to reflect higher repair costs and battery replacement expenses. A few insurers offer discounts for EVs with advanced safety features, but others have added surcharges for models with known battery claims history.
The Regulatory Landscape Ahead
NHTSA is actively updating its safety standards for EV batteries. In 2024, the agency proposed a new rule requiring automakers to monitor battery health over the vehicle's life and to notify owners of degraded cells that could pose a risk. This is a direct response to the recall pattern seen in recent years. The rule is not yet final, but it signals where enforcement is headed.
At the state level, California and New York have adopted requirements for emergency responder training programs specifically for EV incidents. Other states are likely to follow. For consumers, these regulatory shifts mean greater transparency — and potentially fewer surprises down the road.
The Bottom Line
Sales of electric vehicles are reshaping the auto industry, and that includes the safety landscape. The core message from the data is not alarm but awareness. Batteries are complex systems, and like any new technology, they need careful oversight. NHTSA is watching. Owners can protect themselves with routine checks and prompt action on any warning signs. If you drive an EV or plan to, make a habit of checking recall notices and staying informed. Here's what the data shows. Here's what owners should do.
Frequently Asked Questions About EV Battery Safety
How common are EV battery fires? NHTSA does not have a specific statistic for battery fires alone, but the agency's recall data shows that thermal events remain the most common battery-related defect. Industry estimates suggest fire rates are lower than for gasoline cars, but the severity can be higher. What is the first sign of a battery problem? A sudden loss of range, a chemical smell, or unusual heat from the floorboard are all red flags. Some EVs display warnings before a failure. Should I worry about charging overnight? Modern EVs have battery management systems that prevent overcharging, but using only manufacturer-approved chargers reduces risk. How much does a battery replacement cost? Depending on the model, a new battery pack can cost between $5,000 and $20,000, which is why it's essential to understand your warranty coverage. These questions reflect the most common concerns among owners, and the answers all point back to the same principle: stay informed and act quickly if something seems off.
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