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

At Arizona's residential electricity rate of 15.45¢/kWh, a 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels) (rated 45.1 kWh per 100 miles by the EPA) costs $6.96 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. Charging at home is much cheaper than gas here: 56.5% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 BMW i7 M70 xDrive Sedan (20 inch Wheels) costs roughly $1,044 a year to charge at home in Arizona, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,359 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 $18.59 at Arizona's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 12,979 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; Arizona alone ranks 25 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.

Ask a licensed Arizona electrician to quote the install before this math becomes a real decision.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Arizona's 15.45¢/kWh rate ranks 25 of 51 states; the state rate guide lays out the full spread.