Charging a 2027 Mercedes-Benz EQS 550 4matic (SUV) at home in Washington

At Washington's residential electricity rate of 14.35¢/kWh, a 2027 Mercedes-Benz EQS 550 4matic (SUV) (rated 42 kWh per 100 miles by the EPA) costs $6.03 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 62.4% cheaper per mile than gasoline in Washington — charging at home is much cheaper than gas here.

What a year of driving costs

Washington owners putting 15,000 annual miles on a 2027 Mercedes-Benz EQS 550 4matic (SUV) spend about $904 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,499 saved annually, at this mileage.

Filling up the 2027 Mercedes-Benz EQS 550 4matic (SUV), in dollars

At Washington's rate, fully covering this 2027 Mercedes-Benz EQS 550 4matic (SUV)'s 317-mile EPA range costs about $19.11 (133.1 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Mercedes-Benz EQS 550 4matic (SUV) in Washington ranks 9,563 for cost savings versus gas — 1 being the best deal nationally. Separately, the Mercedes-Benz EQS 550 4matic (SUV) ranks 303 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.

Ask a licensed Washington electrician to quote the install before this math becomes a real decision.

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.