Charging a 2027 Audi S6 e-tron (20 inch wheels) at home in Hawaii

A 2027 Audi S6 e-tron (20 inch wheels) draws 32.7 kWh per 100 miles per the EPA; at Hawaii's 45.95¢/kWh residential rate that's $15.01 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 6.3% cheaper per mile than gasoline in Hawaii — charging at home costs a little less than gas here.

What a year of driving costs

Hawaii owners putting 15,000 annual miles on a 2027 Audi S6 e-tron (20 inch wheels) spend about $2,251 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $152 saved annually, at this mileage.

Cost of a full charge

At Hawaii's rate, fully covering this 2027 Audi S6 e-tron (20 inch wheels)'s 326-mile EPA range costs about $48.92 (106.5 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 Audi S6 e-tron (20 inch wheels) in Hawaii ranks 20,022 for cost savings versus gas — 1 being the best deal nationally. Separately, the Audi S6 e-tron (20 inch wheels) ranks 106 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.

Line up a few Hawaii electrician quotes for Level 2 install before you commit either way.

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.