From Nissan’s website:
The 100% electric Nissan LEAF® motor is powered exclusively by an advanced lithium-ion battery that you can charge at home, or on-the-go. With an aerodynamic body, regenerative brakes, and available LED headlights that use half the energy of traditional ones, the Nissan LEAF® gets more miles and more fun out of every kilowatt. There is no lag, no revving-up or shifting gears—it just goes, up to about 90 miles an hour!
City MPGe: 129
Highway MPGe: 102