$13.67full charge
The Q4 e-tron Premium 45 (82 kWh) costs about $13.67 to charge fully at North Carolina's average home rate of 15.16¢/kWh, including ~10% charging loss (90.2 kWh from the wall). That is $4.75 per 100 miles.
EIA residential average, North Carolina, 2026-07 (latest in this book). No North Carolina gasoline series, so this uses PADD 1C regular, week of Oct 5, 2026.
At 1,000 miles a month and 30 mpg, home charging costs $47.48 and the gas car costs $131.97. The EV saves $84.49 a month at $3.959/gal. Both miles and mpg are editable on the calculator.
The listed DC fast-charge time to 80% is 28 minutes at up to 150 kW. A full home charge is a different session. This page prices the energy from the wall, not how long a Level 2 charger takes.
This page uses the residential rate. Public fast-charging prices are a separate scenario and are not included.