Do you have a source?
And are you saying that production of electric cars produces significantly more emissions than petrol?
And are you saying that production of electric cars produces significantly more emissions than petrol?
The actual production of an EV _can_ result in more emissions (along the whole supply chain) than petrol cars, yes.
Although the vast majority of car manufacturers (and supply companies) are geared up for producing petrol cars and not EVs, so it's no real surprise that _right now_ electric cars aren't as efficient to build.
The more that electric cars are produced, and the more that Li-ion/solid-state batteries are developed, the better the picture will be at the building stage.