EV vs gas cost in Idaho
Regular gas is $4.60 a gallon (Rocky Mountain average, week of 2026-10-26) and home electricity is 13.37¢/kWh (2026-08). A typical EV (31.5 kWh per 100 miles) saves about $1,334 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 | $0.042 | $42 | $505 | – |
| 25 MPG gas car | $0.184 | $184 | $2,207 | $1,702 |
| 30 MPG gas car | $0.153 | $153 | $1,839 | $1,334 |
| 35 MPG gas car | $0.131 | $131 | $1,576 | $1,071 |
Questions about EV vs gas in Idaho
Is an EV cheaper to fuel in Idaho?
Yes. At $4.60/gal a 30 MPG car costs $0.153 per mile in gas. A typical EV charged at home costs $0.042 per mile at 13.37¢/kWh. Over 12,000 miles that is $1,334 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 Idaho expensive compared with other states?
Idaho ranks #40 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.