South Carolina home charging cost for the 2026 Audi Q4 55 e-tron quattro

At South Carolina's residential electricity rate of 16.04¢/kWh, a 2026 Audi Q4 55 e-tron quattro (rated 34.6 kWh per 100 miles by the EPA) costs $5.55 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: 65.3% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Audi Q4 55 e-tron quattro costs roughly $833 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 $1,570 a year.

Cost of a full charge

Covering the 2026 Audi Q4 55 e-tron quattro's EPA-rated 251-mile range takes about 86.9 kWh, which costs about $13.94 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 7,282 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi Q4 55 e-tron quattro alone ranks 140 of 400 models for efficiency; South Carolina alone ranks 27 of 51 states for electricity price.

Getting set up to charge a 2026 Audi Q4 55 e-tron quattro at home

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 South Carolina electrician to quote the install before this math becomes a real decision.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Audi Q4 55 e-tron quattro's cost in South Carolina. Curious how South Carolina's 16.04¢/kWh compares? The guide to charging cost by state ranks every state side by side.