South Dakota home charging cost for the 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels)

In South Dakota, home electricity runs 14.33¢/kWh — put a 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels)'s EPA-rated 45.1 kWh/100mi against that and 100 miles costs $6.46, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 59.7% less than gas per mile, here specifically.

2026 BMW i7 M70 xDrive Sedan (20 inch Wheels): yearly cost in South Dakota

At fueleconomy.gov's default of 15,000 annual miles, the 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels) costs roughly $969 a year to charge at home in South Dakota, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,434 a year.

Filling up the 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels), in dollars

Covering the 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels)'s EPA-rated 267-mile range takes about 120.3 kWh, which costs about $17.24 at South Dakota's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 11,320 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i7 M70 xDrive Sedan (20 inch Wheels) alone ranks 360 of 400 models for efficiency; South Dakota alone ranks 14 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. South Dakota's 14.33¢/kWh rate ranks 14 of 51 states; the state rate guide lays out the full spread.