Battery production does raise an EV’s upfront manufacturing emissions compared with a similar gasoline car, largely because producing battery materials and cells is energy-intensive. However, authoritative lifecycle assessments from the US EPA and the U.S. Department of Energy conclude that, when you add manufacturing plus driving emissions over the vehicle’s full life, EVs typically emit less total greenhouse gas than gasoline vehicles.
The reason is operational efficiency: EVs convert electricity to motion far more efficiently than internal combustion engines, so their “use-phase” emissions (from electricity generation) are usually much lower than the ongoing CO₂ from burning gasoline. The International Council on Clean Transportation (ICCT) synthesizes this in its lifecycle work, reporting that EVs emit roughly 73% less greenhouse gas over their lifetime than comparable gasoline cars, even with higher production emissions.
Grid mix and how long the vehicle is driven can change the size of the benefit, and coal-heavy electricity can reduce it. But the core finding across EPA/DOE lifecycle summaries is that batteries do not make EVs worse overall; they shift some emissions earlier (manufacturing) while reducing total emissions across the vehicle’s lifetime.