Charging a 2027 BMW iX3 50 xDrive (22 inch Summer Tires) at home in Hawaii

At Hawaii's residential electricity rate of 45.95¢/kWh, a 2027 BMW iX3 50 xDrive (22 inch Summer Tires) (rated 32.5 kWh per 100 miles by the EPA) costs $14.92 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. That works out to 6.9% cheaper per mile than gasoline in Hawaii — charging at home costs a little less than gas here.

Annual cost, at 15 thousands miles a year

Hawaii owners putting 15,000 annual miles on a 2027 BMW iX3 50 xDrive (22 inch Summer Tires) spend about $2,237 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $165 saved annually, at this mileage.

Cost of a full charge

At Hawaii's rate, fully covering this 2027 BMW iX3 50 xDrive (22 inch Summer Tires)'s 392-mile EPA range costs about $58.47 (127.3 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 BMW iX3 50 xDrive (22 inch Summer Tires) in Hawaii ranks 20,008 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW iX3 50 xDrive (22 inch Summer Tires) ranks 100 of 400 EV models for raw efficiency, and Hawaii ranks 51 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

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

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Hawaii has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.