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

In California, home electricity runs 33.17¢/kWh — put a 2026 Audi Q4 55 e-tron quattro's EPA-rated 34.6 kWh/100mi against that and 100 miles costs $11.49, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 28.3% cheaper per mile than gasoline in California — charging at home is cheaper than gas here.

What a year of driving costs

California owners putting 15,000 annual miles on a 2026 Audi Q4 55 e-tron quattro spend about $1,723 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $680 saved annually, at this mileage.

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

At California's rate, fully covering this 2026 Audi Q4 55 e-tron quattro's 251-mile EPA range costs about $28.83 (86.9 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Audi Q4 55 e-tron quattro in California, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Audi Q4 55 e-tron quattro in California ranks 18,647 for cost savings versus gas — 1 being the best deal nationally. Separately, the Audi Q4 55 e-tron quattro ranks 140 of 400 EV models for raw efficiency, and California ranks 50 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Audi Q4 55 e-tron quattro's cost in California. California 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.