Charging a 2026 Audi Q4 Sportback 55 e-tron quattro at home in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Audi Q4 Sportback 55 e-tron quattro's EPA-rated 34.6 kWh/100mi against that and 100 miles costs $4.77, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 70.2% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

What a year of driving costs

Montana owners putting 15,000 annual miles on a 2026 Audi Q4 Sportback 55 e-tron quattro spend about $715 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,688 saved annually, at this mileage.

Filling up the 2026 Audi Q4 Sportback 55 e-tron quattro, in dollars

At Montana's rate, fully covering this 2026 Audi Q4 Sportback 55 e-tron quattro's 251-mile EPA range costs about $11.97 (86.9 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 2026 Audi Q4 Sportback 55 e-tron quattro in Montana ranks 3,496 for cost savings versus gas — 1 being the best deal nationally. Separately, the Audi Q4 Sportback 55 e-tron quattro ranks 141 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Audi Q4 Sportback 55 e-tron quattro at home

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 Montana electrician quotes for Level 2 install before you commit either way.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.