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

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels)'s EPA-rated 42.5 kWh/100mi against that and 100 miles costs $8.16, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 49.1% less than gas per mile, here specifically.

What a year of driving costs

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 Illinois costs about $1,224/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,179 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 $23.25 at 19.22¢/kWh in Illinois.

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

This combination ranks 15,280 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; Illinois alone ranks 36 of 51 states for electricity price.

Getting set up to charge a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) at home

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 Illinois before deciding.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels)'s cost in Illinois. Curious how Illinois's 19.22¢/kWh compares? The guide to charging cost by state ranks every state side by side.