Fisker Karma drivers averaging 150 MPG*
One of the big criticisms of the Fisker Karma is that the heavy beast isn't exactly efficient. A curb weight of 5,300 pounds is one reason why the EPA says, when running on premium gas, the Karma gets just 20 miles per gallon combined (and 20 city/21 hwy). When you throw electricity into the mix, the Karma is rated at 54 MPGe combined.