Nissan says its all-electric Leaf will get the equivalent of 99 miles per gallon in combined highway and city driving, based on government testing.

Nissan says the Environmental Protection Agency’s fuel efficiency window sticker will estimate that the Leaf will achieve the equivalent of 106 mpg in city driving and 92 miles in highway conditions.

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EPA tests estimate the Leaf will travel 73 miles on a fully charged battery and will use roughly 561 dollars a year in electricity.

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Unlike hybrids, which use a combination of gasoline and electricity, and General Motors’ new Chevy Volt, which utilizes an electric battery and a small gasoline engine when the battery begins to run down, the Leaf is an all-electric vehicle which does not have a gas engine.

Nissan will begin selling Leaf in California, Washington, Oregon, Arizona and Tennessee in December. It is expected to be available nationwide by the end of 2011.

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(Copyright 2010 WWJ Newsradio 950. All Rights Reserved. The Associated Press Contributed To This Story)