What it costs to charge a 2027 Audi A6 e-tron ultra in Hawaii

In Hawaii, home electricity runs 45.95¢/kWh — put a 2027 Audi A6 e-tron ultra's EPA-rated 26.5 kWh/100mi against that and 100 miles costs $12.16, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 24.1% cheaper per mile than gasoline in Hawaii — charging at home is cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2027 Audi A6 e-tron ultra in Hawaii runs about $1,824 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $579 saved annually, at this mileage.

Filling up the 2027 Audi A6 e-tron ultra, in dollars

$48.03 — that's what Hawaii's 45.95¢/kWh rate puts on the 104.5 kWh a 2027 Audi A6 e-tron ultra needs for its full 395-mile EPA range.

2027 Audi A6 e-tron ultra in Hawaii, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Audi A6 e-tron ultra in Hawaii ranks 19,104 for cost savings versus gas — 1 being the best deal nationally. Separately, the Audi A6 e-tron ultra ranks 14 of 400 EV models for raw efficiency, and Hawaii ranks 51 of 51 for cheapest residential electricity.

Before you install a home charger in Hawaii

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.

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

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.