Charging a 2026 Mercedes-Benz EQS 580 4matic at home in Montana

At Montana's residential electricity rate of 13.77¢/kWh, a 2026 Mercedes-Benz EQS 580 4matic (rated 35.6 kWh per 100 miles by the EPA) costs $4.91 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. That works out to 69.4% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Montana owners putting 15,000 annual miles on a 2026 Mercedes-Benz EQS 580 4matic spend about $736 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,667 saved annually, at this mileage.

Cost of a full charge

At Montana's rate, fully covering this 2026 Mercedes-Benz EQS 580 4matic's 371-mile EPA range costs about $18.2 (132.2 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Mercedes-Benz EQS 580 4matic in Montana ranks 4,068 for cost savings versus gas — 1 being the best deal nationally. Separately, the Mercedes-Benz EQS 580 4matic ranks 160 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Before you install a home charger in Montana

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Line up a few Montana electrician quotes for Level 2 install before you commit either way.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.