Fisker Gives Karma 67.2 MPG Estimated Fuel Economy Rating, Beats All… 1Ben Wojdyla and 42 others eEditaDeleteiInviteBPromoteXDismissXUndismissbBlock for JalopnikbHide 67.2MPG. 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. » 9/09/09 4:00pm 9/09/09 4:00pmDetroit Auto Show: Fisker Karma Luxury Hybrid, Only $80,0002010 Toyota Prius: Bigger Size Meets Bigger Fuel Economy - 50 MPG!