Montana home charging cost for the 2026 BMW iX xDrive45 (21 inch Wheels)

At Montana's residential electricity rate of 13.77¢/kWh, a 2026 BMW iX xDrive45 (21 inch Wheels) (rated 37.7 kWh per 100 miles by the EPA) costs $5.19 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: 67.6% less than gas per mile, here specifically.

2026 BMW iX xDrive45 (21 inch Wheels): yearly cost in Montana

At fueleconomy.gov's default of 15,000 annual miles, the 2026 BMW iX xDrive45 (21 inch Wheels) costs roughly $779 a year to charge at home in Montana, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,624 a year.

What one full charge costs

Covering the 2026 BMW iX xDrive45 (21 inch Wheels)'s EPA-rated 297-mile range takes about 112 kWh, which costs about $15.43 at Montana's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 5,404 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW iX xDrive45 (21 inch Wheels) alone ranks 211 of 400 models for efficiency; Montana alone ranks 10 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.

Ask a licensed Montana 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 BMW iX xDrive45 (21 inch Wheels)'s cost in Montana. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.