Hawaii home charging cost for the 2027 BMW i7 xDrive60 Sedan (21 inch All-Season Tires)

In Hawaii, home electricity runs 45.95¢/kWh — put a 2027 BMW i7 xDrive60 Sedan (21 inch All-Season Tires)'s EPA-rated 38.4 kWh/100mi against that and 100 miles costs $17.64, versus $16.02 for a gas car averaging 25.5 mpg. This model costs more to charge at home than gas would here: 10.1% more than gas per mile here, not less — the arithmetic isn't clamped to always favor charging.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 BMW i7 xDrive60 Sedan (21 inch All-Season Tires) costs roughly $2,645 a year to charge at home in Hawaii, against roughly $2,403 a year for an equivalent gas car. That's about $242 MORE a year than the gas comparison, not less.

Filling up the 2027 BMW i7 xDrive60 Sedan (21 inch All-Season Tires), in dollars

Covering the 2027 BMW i7 xDrive60 Sedan (21 inch All-Season Tires)'s EPA-rated 344-mile range takes about 132 kWh, which costs about $60.67 at Hawaii's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 20,203 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i7 xDrive60 Sedan (21 inch All-Season Tires) alone ranks 223 of 400 models for efficiency; Hawaii alone ranks 51 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 Hawaii before deciding.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. This is one of the combinations where charging costs more than gas — the guide to when that happens explains why the arithmetic can go either way.