10/26/2011

UNBELIEVABLE: "Worst Electric Car Ever Made?"



Fisker Automotives' Karma car gets worse mileage than SUV
Here is the original piece by Warren Meyer.

The Fisker Karma electric car, developed mainly with your tax money so that a bunch of rich VC’s wouldn’t have to risk any real money, has rolled out with an nominal EPA MPGe of 52 in all electric mode (we will ignore the gasoline engine for this analysis).

Not bad? Unfortunately, it’s a sham. This figure is calculated using the grossly flawed EPA process that substantially underestimates the amount of fossil fuels required to power the electric car, as I showed in great depth in an earlier Forbes.com article. In short, the EPA methodology leaves out, among other things, the conversion efficiency in generating the electricity from fossil fuels in the first place [by assuming perfect conversion of the potential energy in the fuel to electricity, the EPA is actually breaking the 2nd law of thermodynamics].

In the Clinton administration, the Department of Energy (DOE) created a far superior well to wheels MPGe metric that honestly compares the typical fossil fuel use of an electric vs. gasoline car, using real-world power plant efficiencies and fuel mixes to figure out how much fuel is used to produce the electricity that goes into the electric car.

As I calculated in my earlier Forbes article, one needs to multiply the EPA MPGe by .365 to get a number that truly compares fossil fuel use of an electric car with a traditional gasoline engine car on an apples to apples basis. In the case of the Fisker Karma, we get a true MPGe of 19. This makes it worse than even the city rating of a Ford Explorer SUV. . . .


While Fisker refused to appear on the same show with Meyer, Fisker's defense is provided here. Its defense is that well this is the way the EPA measures MPG for electric cars. The defense doesn't seem to directly address Meyer's points.

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3 Comments:

Blogger Carlos Gardeazabal said...

This isn't an electric car, get your facts right, it's a hybrid. It has an electric motor to power the wheels but a gas powered generator that charges the battery when they get low. Therefore, it's a hybrid.

11/01/2013 12:57 PM  
Blogger Carlos Gardeazabal said...

This isn't an electric car, get your facts right, it's a hybrid. It has an electric motor to power the wheels but a gas powered generator that charges the battery when they get low. Therefore, it's a hybrid.

11/01/2013 12:58 PM  
Blogger Carlos Gardeazabal said...

This isn't an electric car, get your facts right, it's a hybrid. It has an electric motor to power the wheels but a gas powered generator that charges the battery when they get low. Therefore, it's a hybrid.

11/01/2013 12:59 PM  

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