Charging a 2026 BMW iX xDrive45 (20 inch Wheels) at home in Montana

At Montana's residential electricity rate of 13.77¢/kWh, a 2026 BMW iX xDrive45 (20 inch Wheels) (rated 36 kWh per 100 miles by the EPA) costs $4.96 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 69.1% 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 2026 BMW iX xDrive45 (20 inch Wheels) spend about $743 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,660 saved annually, at this mileage.

What one full charge costs

At Montana's rate, fully covering this 2026 BMW iX xDrive45 (20 inch Wheels)'s 312-mile EPA range costs about $15.46 (112.3 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 2026 BMW iX xDrive45 (20 inch Wheels) in Montana ranks 4,302 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW iX xDrive45 (20 inch Wheels) ranks 168 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 BMW iX xDrive45 (20 inch Wheels) at home

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.

Line up a few Montana electrician quotes for Level 2 install before you commit either way.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 BMW iX xDrive45 (20 inch Wheels)'s cost in Montana. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.