Just as an example:
Last year, I used 3,804kWh, which I think was around 11k miles
It cost us $512
89% charging at Home(11 cents per kWh), 10% charging at Superchargers (36 cents per kWh). 3376kWh out of 3804kWh at home.
If I had a ICE vehicle that got 25mpg, it would have cost me $1602 at $3.70 gallon. $1,300 at $3 gallon
So, about $1,100 in fuel savings.
Of course that doesn't consider things like time saved by not pumping gas(especially in freezing weather), waiting for service, the cost of service, etc.
How much is the additional yearly registration on the electric that offsets what you would have paid in gas tax?