2027 Audi RS e-tron GT Performance: home charging cost in Montana

At Montana's residential electricity rate of 13.77¢/kWh, a 2027 Audi RS e-tron GT Performance (rated 40.2 kWh per 100 miles by the EPA) costs $5.53 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: 65.5% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Audi RS e-tron GT Performance charged at home in Montana costs about $830/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,573 a year.

Cost of a full charge

A 2027 Audi RS e-tron GT Performance needs roughly 111.7 kWh to reach its EPA-rated 278-mile range, which runs about $15.38 at 13.77¢/kWh in Montana.

How this compares nationally

This combination ranks 7,133 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Audi RS e-tron GT Performance alone ranks 272 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Getting set up to charge a 2027 Audi RS e-tron GT Performance 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.

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

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Audi RS e-tron GT Performance's cost in Montana. At 13.77¢/kWh, Montana sits in the middle of the national range — the guide to why charging cost varies by state shows where.