This is not correct. It depends quite a bit on commute patterns and electricity source: https://iopscience.iop.org/article/10.1088/1748-9326/11/4/044007 https:

This is not correct. It depends quite a bit on commute patterns and electricity source: https://iopscience.iop.org/article/10.1088/1748-9326/11/4/044007 https://iopscience.iop.org/article/10.1088/1748-9326/11/4/04... The Prius is a better option from a lifecycle CO2 perspective in many places than either a high efficiency conventional vehicle or a pure battery-electric vehicle. That changes if your electricity comes from more renewable sources -- California, for example. Shorter commutes favor small battery packs or no batteries at all.