EV vs gas cost in Montana
Regular gas is $4.60 a gallon (Rocky Mountain average, week of 2026-10-26) and home electricity is 15.57¢/kWh (2026-08). A typical EV (31.5 kWh per 100 miles) saves about $1,251 a year against a 30 MPG car.
Gas is down 0.7¢ since last week. Prices for the week of October 26, 2026.
Fuel cost for 1,000 miles a month
| Car | Per mile | Per month | Per year | EV saves per year |
|---|---|---|---|---|
| Typical EV, home charging | $0.049 | $49 | $589 | – |
| 25 MPG gas car | $0.184 | $184 | $2,207 | $1,618 |
| 30 MPG gas car | $0.153 | $153 | $1,839 | $1,251 |
| 35 MPG gas car | $0.131 | $131 | $1,576 | $988 |
Questions about EV vs gas in Montana
Is an EV cheaper to fuel in Montana?
Yes. At $4.60/gal a 30 MPG car costs $0.153 per mile in gas. A typical EV charged at home costs $0.049 per mile at 15.57¢/kWh. Over 12,000 miles that is $1,251 a year.
How much fuel does a typical driver use?
At 1,000 miles a month a 30 MPG car burns 33 gallons a month, 400 a year. A typical EV uses 315 kWh of electricity for the same miles.
Is gas in Montana expensive compared with other states?
Montana ranks #41 of 51, where 1 is the cheapest gas. Prices run from $3.74 in Texas to $6.00 in California. The higher the gas price, the sooner an EV's purchase premium pays back.