Charging a 2026 Audi Q4 45 e-tron at home in Washington

A 2026 Audi Q4 45 e-tron draws 29.4 kWh per 100 miles per the EPA; at Washington's 14.35¢/kWh residential rate that's $4.22 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 73.7% cheaper per mile than gasoline in Washington — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Washington owners putting 15,000 annual miles on a 2026 Audi Q4 45 e-tron spend about $633 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,770 saved annually, at this mileage.

Cost of a full charge

At Washington's rate, fully covering this 2026 Audi Q4 45 e-tron's 288-mile EPA range costs about $12.15 (84.7 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 45 e-tron in Washington ranks 1,516 for cost savings versus gas — 1 being the best deal nationally. Separately, the Audi Q4 45 e-tron ranks 48 of 400 EV models for raw efficiency, and Washington ranks 15 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Audi Q4 45 e-tron 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Audi Q4 45 e-tron's cost in Washington. Curious how Washington's 14.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.