All EVs

2027 Rolls-Royce Spectre

43.2 kWh per 100 miles combined. At the 2025 U.S. residential average of 17.23¢/kWh, 100 miles costs $7.44.

City

44 kWh/100

Highway

42.2 kWh/100

Range on the median trim

308 mi

At 10,000 miles a year, home charging at that same U.S. average comes to $744.34 and 4,320 kWh.

Change the rate, the miles, or compare gasoline

fueleconomy.gov listing 50858, trim Spectre Black Badge (23 inch wheels), class Compact Cars. The combined rating is the median of 4 trims in this model year. File retrieved October 10, 2026. Electricity price: EIA-861 Average Bill, U.S. residential, 2025. Gasoline price on the calculator: U.S. regular, all formulations, retail, $4.354/gal, week of 2026-10-05.