Charging a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) at home in Minnesota

At Minnesota's residential electricity rate of 15.98¢/kWh, a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) (rated 42.5 kWh per 100 miles by the EPA) costs $6.78 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 57.7% cheaper per mile than gasoline in Minnesota — charging at home is much cheaper than gas here.

What a year of driving costs

Minnesota owners putting 15,000 annual miles on a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) spend about $1,018 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,385 saved annually, at this mileage.

Cost of a full charge

At Minnesota's rate, fully covering this 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels)'s 285-mile EPA range costs about $19.33 (121 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) in Minnesota ranks 12,398 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 M70 xDrive Sedan (21 inch Wheels) ranks 310 of 400 EV models for raw efficiency, and Minnesota ranks 26 of 51 for cheapest residential electricity.

Before you install a home charger in Minnesota

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 Minnesota electrician quotes for Level 2 install before you commit either way.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Minnesota's 15.98¢/kWh rate ranks 26 of 51 states; the state rate guide lays out the full spread.