Manufacturing an electric vehicle (EV), especially its battery, requires significant energy and resources, resulting in higher initial carbon emissions compared to producing a gasoline-powered car. The US EPA and leading lifecycle studies confirm that battery production is the main factor increasing manufacturing emissions for EVs.
However, while production-phase emissions are higher for EVs, these are typically offset during the vehicle's use phase by lower operational emissions. Authoritative sources like the US EPA emphasize that higher manufacturing emissions do not mean EVs have a higher total carbon footprint over their lifetime.
The key factor is the electricity grid's cleanliness: in most regions, the overall carbon emissions from EVs are substantially lower than gasoline cars once the total lifecycle is considered. Still, manufacturing remains the phase where EVs have the greatest carbon disadvantage versus conventional vehicles.