The new Leaf will run about 150 miles (240km) on a single charge, about 40 miles more than its previous model, the firm said.
But that still falls short of ranges offered by rivals Tesla and GM.
Other updates include advances in autonomous driving technology and a more modern design.
The Leaf, the world's best-selling electric car, is facing increasing competition in the fast-developing green car market, fuelled in part by tightening emissions standards around the world.
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