Depends on driving habits and price of electricity and gas. In Washington state, electricity is cheaper compared to most of the US, and gas is among the most expensive compared to most of the US.
For less than ~10k miles per year, the higher up front cost of an electric vehicle and the greater depreciation due to eventual battery replacement might make a hybrid gas vehicle still cheaper per mile.
But for high mileage, high frequency of stop and go driving, I imagine all electric is cheapest?
Electric is likely cheapest considering duty cycle and fuel usage, and the battery should not need to be replaced for hundreds of thousands of miles, at which point we will have better batteries that last even longer and are cheaper.
> might make a hybrid gas vehicle still cheaper per mile
I agree. What is unconscionable is deploying 10s of thousands of vehicles that spend every day of operation accelerating rather quickly then coming to a full stop within a few seconds without using regenerative braking.
The published ratings of battery depreciation are per-mile, because there’s not really any other way to straightforwardly measure it, but the chemistry of battery degradation is very complex, and factors like number of high-current heating cycles and depth of discharge definitely matter.
For less than ~10k miles per year, the higher up front cost of an electric vehicle and the greater depreciation due to eventual battery replacement might make a hybrid gas vehicle still cheaper per mile.
But for high mileage, high frequency of stop and go driving, I imagine all electric is cheapest?