Charging a 2027 BMW iX3 50 xDrive (21 inch Summer Tires) at home in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2027 BMW iX3 50 xDrive (21 inch Summer Tires)'s EPA-rated 32 kWh/100mi against that and 100 miles costs $4.4, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 72.5% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

What a year of driving costs

Montana owners putting 15,000 annual miles on a 2027 BMW iX3 50 xDrive (21 inch Summer Tires) spend about $661 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,742 saved annually, at this mileage.

What one full charge costs

At Montana's rate, fully covering this 2027 BMW iX3 50 xDrive (21 inch Summer Tires)'s 398-mile EPA range costs about $17.53 (127.3 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 BMW iX3 50 xDrive (21 inch Summer Tires) in Montana ranks 2,082 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW iX3 50 xDrive (21 inch Summer Tires) ranks 87 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Next step: home charger installation

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Get quotes from local electricians for Level 2 charger installation in Montana before deciding.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.