2027 Audi S e-tron GT (21 inch wheels): home charging cost in Illinois

A 2027 Audi S e-tron GT (21 inch wheels) draws 38.5 kWh per 100 miles per the EPA; at Illinois's 19.22¢/kWh residential rate that's $7.4 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 53.8% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Audi S e-tron GT (21 inch wheels) charged at home in Illinois costs about $1,110/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,293 a year.

Filling up the 2027 Audi S e-tron GT (21 inch wheels), in dollars

A 2027 Audi S e-tron GT (21 inch wheels) needs roughly 113.2 kWh to reach its EPA-rated 294-mile range, which runs about $21.76 at 19.22¢/kWh in Illinois.

Where this ranks

This combination ranks 13,998 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi S e-tron GT (21 inch wheels) alone ranks 226 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

Before you install a home charger in Illinois

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.