Charging a 2026 Mercedes-Benz EQS 450 Plus at home in Washington

A 2026 Mercedes-Benz EQS 450 Plus draws 34 kWh per 100 miles per the EPA; at Washington's 14.35¢/kWh residential rate that's $4.88 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 69.5% cheaper per mile than gasoline in Washington — charging at home costs a fraction of what gas would here.

What a year of driving costs

Washington owners putting 15,000 annual miles on a 2026 Mercedes-Benz EQS 450 Plus spend about $732 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,671 saved annually, at this mileage.

What one full charge costs

At Washington's rate, fully covering this 2026 Mercedes-Benz EQS 450 Plus's 390-mile EPA range costs about $19.04 (132.6 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 450 Plus in Washington ranks 4,023 for cost savings versus gas — 1 being the best deal nationally. Separately, the Mercedes-Benz EQS 450 Plus ranks 122 of 400 EV models for raw efficiency, and Washington ranks 15 of 51 for cheapest residential electricity.

Before you install a home charger in Washington

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.

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

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 14.35¢/kWh, Washington sits in the middle of the national range — the guide to why charging cost varies by state shows where.