2027 Audi A6 e-tron quattro ultra: home charging cost in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2027 Audi A6 e-tron quattro ultra's EPA-rated 28.7 kWh/100mi against that and 100 miles costs $5.52, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 65.5% 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 A6 e-tron quattro ultra charged at home in Illinois costs about $829/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,574 a year.

What one full charge costs

A 2027 Audi A6 e-tron quattro ultra needs roughly 103.5 kWh to reach its EPA-rated 360-mile range, which runs about $19.89 at 19.22¢/kWh in Illinois.

Where this ranks

This combination ranks 7,113 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi A6 e-tron quattro ultra alone ranks 33 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

Next step: home charger installation

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

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Illinois's 19.22¢/kWh rate ranks 36 of 51 states; the state rate guide lays out the full spread.