2026 Mercedes-Benz EQS 580 4matic: home charging cost in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Mercedes-Benz EQS 580 4matic's EPA-rated 35.6 kWh/100mi against that and 100 miles costs $6.85, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 57.3% less than gas per mile, here specifically.

2026 Mercedes-Benz EQS 580 4matic: yearly cost in Illinois

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Mercedes-Benz EQS 580 4matic charged at home in Illinois costs about $1,027/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,376 a year.

What one full charge costs

A 2026 Mercedes-Benz EQS 580 4matic needs roughly 132.2 kWh to reach its EPA-rated 371-mile range, which runs about $25.4 at 19.22¢/kWh in Illinois.

2026 Mercedes-Benz EQS 580 4matic in Illinois, ranked

This combination ranks 12,590 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Mercedes-Benz EQS 580 4matic alone ranks 160 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

Next step: home charger installation

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.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Illinois's 19.22¢/kWh rate ranks 36 of 51 states; the state rate guide lays out the full spread.