It takes at least decade for the carbon from manufacturing to be offset by the lack of emissions from the ev’s daily operation.
Assuming zero carbon electricity generation used in the ev. Local electricity mix will adjust that number up.
If you really want to have a bad time: we don’t have enough lithium to replace even half the cars currently on the road, not counting all the other uses for it aside from ev batteries.
The only two ways out of this are fewer cars or fewer people. When someone suggests the latter path, be sure to ask them who and why.