$22.89full charge
The EQS Sedan 500 4MATIC (2027) (122 kWh) costs about $22.89 to charge fully at Iowa's average home rate of 17.06¢/kWh, including about 10% charging loss (134.2 kWh from the wall). That is $5.17 per 100 miles.
EIA residential average, Iowa, 2026-08 (latest in this book). No Iowa gasoline series, so this uses PADD 2 regular, week of Oct 19, 2026.
At 1,000 miles a month and 30 mpg, home charging costs $51.68 and the gas car costs $138.17. The EV saves $86.49 a month at $4.145/gal. Both miles and mpg are editable on the calculator.
The listed DC fast-charge time is 10–80% in 27 min at up to 350 kW. A full home charge is a different session. This page prices the energy from the wall, not how long a Level 2 charger takes.
This page uses the residential rate. Public fast-charging prices are a separate scenario and are not included.