Illinois home charging cost for the 2026 Audi Q4 45 e-tron

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Audi Q4 45 e-tron's EPA-rated 29.4 kWh/100mi against that and 100 miles costs $5.65, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 64.7% less than gas per mile, here specifically.

2026 Audi Q4 45 e-tron: yearly cost in Illinois

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Audi Q4 45 e-tron costs roughly $848 a year to charge at home in Illinois, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,555 a year.

Filling up the 2026 Audi Q4 45 e-tron, in dollars

Covering the 2026 Audi Q4 45 e-tron's EPA-rated 288-mile range takes about 84.7 kWh, which costs about $16.28 at Illinois's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 7,718 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi Q4 45 e-tron alone ranks 48 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

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

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Illinois's 19.22¢/kWh compares? The guide to charging cost by state ranks every state side by side.