Due to clever PR and misinformation many people are confused as are some on this Forum.
We have 2 problems, Climate Change due to the build up of Green House Gases, and the main culprit in this is CO2.
Enviromental Pollution which is multifaceted but in relation to road vehicles is Nitric Oxide, NO, and PM 2.5 particles.
Changing to a EV reduces CO2 at the exhaust and transfers it to power generation..
Changing to an EV reduces NO output to zero but does nothing for the PM 2.5 particles produced by tyres or brakes, which is common to all vehicles.
EV, Solar Panels and even Wind Turbines, collectively have a significant Enviromental Impact even if they have a reduced Climate Change impact at user level.
Not so long ago Diesels were touted by the establishment, both technological and political as the way forward to tackle climate change and then the effects of NO and PM 2.5 on the enviroment and health came into mainstream.
Which is the best EV to buy?
If you want to pat yourself on the back for doing your bit for Climate Change then any will do. You won't be producing CO2 your power generator will be.
If you want to protect the enviroment then probably a 2nd hand petrol vehicle is the least environmentally damaging for you.
Don't confuse Climate Change and Enviromental Damage, they are 2 separate entities.