What it costs to charge a 2026 Audi Q4 45 e-tron in Tennessee

At Tennessee's residential electricity rate of 13.9¢/kWh, a 2026 Audi Q4 45 e-tron (rated 29.4 kWh per 100 miles by the EPA) costs $4.09 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 74.5% cheaper per mile than gasoline in Tennessee — charging at home costs a fraction of what gas would here.

What a year of driving costs

Home charging this 2026 Audi Q4 45 e-tron in Tennessee runs about $613 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,790 saved annually, at this mileage.

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

$11.77 — that's what Tennessee's 13.9¢/kWh rate puts on the 84.7 kWh a 2026 Audi Q4 45 e-tron needs for its full 288-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Audi Q4 45 e-tron in Tennessee ranks 1,157 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 Tennessee ranks 13 of 51 for cheapest residential electricity.

Before you install a home charger in Tennessee

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.

Line up a few Tennessee electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Tennessee's 13.9¢/kWh compares? The guide to charging cost by state ranks every state side by side.