Charging a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) at home in Montana

A 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) draws 37.4 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $5.16 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 67.8% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires): yearly cost in Montana

Montana owners putting 15,000 annual miles on a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) spend about $773 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,630 saved annually, at this mileage.

Filling up the 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires), in dollars

At Montana's rate, fully covering this 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires)'s 354-mile EPA range costs about $18.25 (132.5 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) in Montana, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) in Montana ranks 5,251 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 xDrive50 Sedan (20 inch All-Season Tires) ranks 204 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) 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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.