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

A 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) draws 37.4 kWh per 100 miles per the EPA; at South Dakota's 14.33¢/kWh residential rate that's $5.37 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 66.5% cheaper per mile than gasoline in South Dakota — charging at home costs a fraction of what gas would here.

What a year of driving costs

South Dakota owners putting 15,000 annual miles on a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) spend about $805 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,598 saved annually, at this mileage.

Cost of a full charge

At South Dakota's rate, fully covering this 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires)'s 354-mile EPA range costs about $18.99 (132.5 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 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) in South Dakota ranks 6,345 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 South Dakota ranks 14 of 51 for cheapest residential electricity.

Before you install a home charger in South Dakota

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 South Dakota 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. South Dakota's 14.33¢/kWh rate ranks 14 of 51 states; the state rate guide lays out the full spread.