What it costs to charge a 2026 BMW i7 eDrive50 Sedan (19 inch Wheels) in Montana

A 2026 BMW i7 eDrive50 Sedan (19 inch Wheels) draws 38.2 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $5.26 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 67.2% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

What a year of driving costs

Home charging this 2026 BMW i7 eDrive50 Sedan (19 inch Wheels) in Montana runs about $789 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,614 saved annually, at this mileage.

What one full charge costs

$16.52 — that's what Montana's 13.77¢/kWh rate puts on the 119.9 kWh a 2026 BMW i7 eDrive50 Sedan (19 inch Wheels) needs for its full 314-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 BMW i7 eDrive50 Sedan (19 inch Wheels) in Montana ranks 5,737 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 eDrive50 Sedan (19 inch Wheels) ranks 220 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 i7 eDrive50 Sedan (19 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.

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

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.