2026 BMW i7 M70 xDrive Sedan (21 inch Wheels): home charging cost in South Carolina

A 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) draws 42.5 kWh per 100 miles per the EPA; at South Carolina's 16.04¢/kWh residential rate that's $6.81 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 57.5% less than gas per mile, here specifically.

2026 BMW i7 M70 xDrive Sedan (21 inch Wheels): yearly cost in South Carolina

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) charged at home in South Carolina costs about $1,021/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,382 a year.

Cost of a full charge

A 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) needs roughly 121 kWh to reach its EPA-rated 285-mile range, which runs about $19.41 at 16.04¢/kWh in South Carolina.

2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) in South Carolina, ranked

This combination ranks 12,516 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i7 M70 xDrive Sedan (21 inch Wheels) alone ranks 310 of 400 models for efficiency; South Carolina alone ranks 27 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.

Get quotes from local electricians for Level 2 charger installation in South Carolina before deciding.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how South Carolina's 16.04¢/kWh compares? The guide to charging cost by state ranks every state side by side.