Fisker Gives Karma 67.2 MPG Estimated Fuel Economy Rating, Beats All Current HybridsBen Wojdyla9/09/09 4:00pm42EditPromoteDismissUndismissHideGo to permalink67.2MPG. That's the fuel economy figure Fisker calculated for the Fisker Karma using SAE standard estimations. If true, it puts the plug-in, mustachioed hybrid ahead of the current champ, the 2010 Toyota Prius at 50MPG. We'll see. Press release below.