A typical vehicle emits approx 4.6 metric tons of CO2 annually on average. That is, every gallon of gasoline burned creates approx 8,887 gms of carbon dioxide. That’s a pretty huge number.
And, this is just about the CO2, there are other pollutants and other greenhouse gases emitted that cause global warming and ozone depletion. Vehicle emissions are dangerous. They are like cancer (Or should we say COVID-19?) is for humans.
With EVs, the emissions are out of the picture. If you charge your EV with a renewable source of electricity you are doing much better for the earth.