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

At Idaho's residential electricity rate of 12.8¢/kWh, a 2026 Audi Q4 Sportback 55 e-tron quattro (rated 34.6 kWh per 100 miles by the EPA) costs $4.43 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: 72.3% less than gas per mile, here specifically.

2026 Audi Q4 Sportback 55 e-tron quattro: yearly cost in Idaho

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 Idaho costs about $665/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,738 a year.

Cost of a full charge

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 $11.12 at 12.8¢/kWh in Idaho.

2026 Audi Q4 Sportback 55 e-tron quattro in Idaho, ranked

This combination ranks 2,176 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; Idaho alone ranks 3 of 51 states for electricity price.

Before you install a home charger in Idaho

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.

Get quotes from local electricians for Level 2 charger installation in Idaho before deciding.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Audi Q4 Sportback 55 e-tron quattro's cost in Idaho. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.