Compare EV ownership against gas car.
The running-cost gap between an EV and a combustion car has two components. Energy is the obvious one: 300 Wh per mile at 15 cents a kWh is 4.5 cents a mile, against 11.7 cents for a 30 mpg car on 3.50 fuel. Maintenance is the quieter half — no oil changes, spark plugs, timing belts, exhaust or transmission service, and brake pads that last two to three times longer because regeneration does most of the slowing. Where the calculation turns is the electricity rate: charging at a public rapid charger can cost three times the home rate, which erases most of the advantage, so the saving shown here assumes predominantly home charging.
EV vs Gas Savings
EV cost = miles x Wh/mi / 1000 x electricity rate; gas cost = miles / mpg x fuel price; saving = gas cost - EV cost + maintenance saving
Typically 4-6 cents a mile on home electricity against 11-15 for gasoline, so roughly a third. On public rapid charging the two can be close to level.
No — this is running cost only. To assess the whole picture, weigh the annual saving here against the price premium, any incentives, and the expected resale difference.