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

In Idaho, home electricity runs 12.8¢/kWh — put a 2026 Audi Q4 55 e-tron quattro's EPA-rated 34.6 kWh/100mi against that and 100 miles costs $4.43, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 72.3% less than gas per mile, here specifically.

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

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Audi Q4 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.

Filling up the 2026 Audi Q4 55 e-tron quattro, in dollars

A 2026 Audi Q4 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.

Where this ranks

This combination ranks 2,175 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; Idaho alone ranks 3 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 Idaho 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. 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.