2026 Ford Mustang Mach-E RWD, HI Charging Cost

2026 Ford Mustang Mach-E RWD: home charging cost in Hawaii

At Hawaii's residential electricity rate of 45.95¢/kWh, a 2026 Ford Mustang Mach-E RWD (rated 31.4 kWh per 100 miles by the EPA) costs $14.45 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 costs a little less than gas here: 9.8% 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 Ford Mustang Mach-E RWD charged at home in Hawaii costs about $2,167/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $236 a year.

Filling up the 2026 Ford Mustang Mach-E RWD, in dollars

A 2026 Ford Mustang Mach-E RWD needs roughly 81.7 kWh to reach its EPA-rated 260-mile range, which runs about $37.56 at 45.95¢/kWh in Hawaii.

Where this ranks

This combination ranks 19,912 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Ford Mustang Mach-E RWD alone ranks 79 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

See the methodology guide for exactly which EIA and EPA figures feed 2026 Ford Mustang Mach-E RWD's cost in Hawaii. 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.