

I.E. this doesn’t account for the carbon footprint of making a entirely new car vs keeping an old one running well.
Any car’s carbon footprint is very much about the fuel, that will be much greater impact than the production of the vehicle itself. That’s why coal powered electricity is around the same as fossil fuels. Look at the graphs in the article.
The article does compare two new cars, but it’s not hard to see that if your ICE don’t have a start “price” (your well maintained ICE), then the EV will have to drive two years on hydro based power, about three years if it’s mixed power (green + fossil), and 13-15 years if pure coal power.
The success of EV (lower carbon emissions) highly spends on green power.