2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels): home charging cost in Wisconsin

At Wisconsin's residential electricity rate of 18.99¢/kWh, a 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) (rated 33.4 kWh per 100 miles by the EPA) costs $6.34 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 is much cheaper than gas here: 60.4% 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 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) charged at home in Wisconsin costs about $952/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,451 a year.

What one full charge costs

A 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels) needs roughly 95.9 kWh to reach its EPA-rated 287-mile range, which runs about $18.21 at 18.99¢/kWh in Wisconsin.

How this compares nationally

This combination ranks 10,869 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i4 xDrive40 Gran Coupe (18 inch Wheels) alone ranks 114 of 400 models for efficiency; Wisconsin alone ranks 35 of 51 states for electricity price.

Before you install a home charger in Wisconsin

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 Wisconsin electrician quotes for Level 2 install before you commit either way.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 BMW i4 xDrive40 Gran Coupe (18 inch Wheels)'s cost in Wisconsin. At 18.99¢/kWh, Wisconsin sits in the middle of the national range — the guide to why charging cost varies by state shows where.