The Fisker Karma’s 20 M.P.G. Sticker: A Scarlet Letter?

With its range-extender gasoline engine engaged, the Fisker Karma plug-in hybrid was rated this week by the Environmental Protection Agency at just 20 miles per gallon. The E.P.A. figure was first reported by the blog GreenCarReports.com.

In the ensuing blowback, some critics concluded that the luxury sport sedan, which was not yet certified by the California Air Resources Board for sale in that primary E.V. market, would be a “fuel economy flop.”
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