What it costs to charge a 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) in South Dakota

A 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) draws 33.4 kWh per 100 miles per the EPA; at South Dakota's 14.33¢/kWh residential rate that's $4.79 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 70.1% 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

Home charging this 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) in South Dakota runs about $718 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,685 saved annually, at this mileage.

What one full charge costs

$13.74 — that's what South Dakota's 14.33¢/kWh rate puts on the 95.9 kWh a 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) needs for its full 287-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) in South Dakota ranks 3,590 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i4 xDrive40 Gran Coupe (18 inch Wheels) ranks 114 of 400 EV models for raw efficiency, and South Dakota ranks 14 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 BMW i4 xDrive40 Gran Coupe (18 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.

Line up a few South Dakota 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. Curious how South Dakota's 14.33¢/kWh compares? The guide to charging cost by state ranks every state side by side.