South Carolina home charging cost for the 2026 Audi Q4 45 e-tron

At South Carolina's residential electricity rate of 16.04¢/kWh, a 2026 Audi Q4 45 e-tron (rated 29.4 kWh per 100 miles by the EPA) costs $4.72 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: 70.6% less than gas per mile, here specifically.

2026 Audi Q4 45 e-tron: yearly cost in South Carolina

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Audi Q4 45 e-tron costs roughly $707 a year to charge at home in South Carolina, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,696 a year.

Cost of a full charge

Covering the 2026 Audi Q4 45 e-tron's EPA-rated 288-mile range takes about 84.7 kWh, which costs about $13.58 at South Carolina's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 3,271 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi Q4 45 e-tron alone ranks 48 of 400 models for efficiency; South Carolina alone ranks 27 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 South Carolina electrician quotes for Level 2 install before you commit either way.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Audi Q4 45 e-tron's cost in South Carolina. South Carolina's 16.04¢/kWh rate ranks 27 of 51 states; the state rate guide lays out the full spread.