And it's not as if EVs are especially heavy in absolute terms, just a bit heavier than a same-size petrol. My Renault 5 is about the same mass as a mid-range Ford Focus. I suspect as a general rule that EVs are about as heavy as the next size up of petrol/diesel, so nothing exceptional.
At the bottom end, a city EV such the Dacia Spring is under a tonne.
nib