2026 Audi Q4 Sportback 55 e-tron quattro: home charging cost in North Carolina

At North Carolina's residential electricity rate of 14.9¢/kWh, a 2026 Audi Q4 Sportback 55 e-tron quattro (rated 34.6 kWh per 100 miles by the EPA) costs $5.16 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. Charging at home costs a fraction of what gas would here: 67.8% 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 2026 Audi Q4 Sportback 55 e-tron quattro charged at home in North Carolina costs about $774/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,629 a year.

What one full charge costs

A 2026 Audi Q4 Sportback 55 e-tron quattro needs roughly 86.9 kWh to reach its EPA-rated 251-mile range, which runs about $12.95 at 14.9¢/kWh in North Carolina.

Where this ranks

This combination ranks 5,255 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi Q4 Sportback 55 e-tron quattro alone ranks 141 of 400 models for efficiency; North Carolina alone ranks 18 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.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how North Carolina's 14.9¢/kWh compares? The guide to charging cost by state ranks every state side by side.