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

In Arizona, home electricity runs 15.45¢/kWh — put a 2026 Mercedes-Benz EQS 450 Plus's EPA-rated 34 kWh/100mi against that and 100 miles costs $5.25, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 67.2% cheaper per mile than gasoline in Arizona — charging at home costs a fraction of what gas would here.

2026 Mercedes-Benz EQS 450 Plus: yearly cost in Arizona

Arizona owners putting 15,000 annual miles on a 2026 Mercedes-Benz EQS 450 Plus spend about $788 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,615 saved annually, at this mileage.

What one full charge costs

At Arizona's rate, fully covering this 2026 Mercedes-Benz EQS 450 Plus's 390-mile EPA range costs about $20.49 (132.6 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 2026 Mercedes-Benz EQS 450 Plus in Arizona ranks 5,706 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 Arizona ranks 25 of 51 for cheapest residential electricity.

Next step: home charger installation

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

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Arizona's 15.45¢/kWh rate ranks 25 of 51 states; the state rate guide lays out the full spread.