Here is one: http://sustainability.stackexchange.com/a/2736 http://sustainability.stackexchange.com/a/2736 tl;dr: upgrading to a newer car with better efficien

Here is one: http://sustainability.stackexchange.com/a/2736 http://sustainability.stackexchange.com/a/2736 tl;dr: upgrading to a newer car with better efficiency saves about 10% in lifetime carbon footprint, vs 25% that is used pre-purchase. This is ICE, but I would guess the manufacture and disposal footprint of an electric is even higher.