
Henrik Fisker, CEO & founder, Fisker Automotive, at 2012 Fisker Karma event, Los Angeles, Feb 2012
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2012 Fisker Karma: Brief Drive Report
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The same day Consumer Reports released its devastating review of the 2012 Fisker Karma, the makers of the range-extended electric luxury sedan put out their own press release.
Covering the $106,000 car's fuel economy, it reported on the real-world gas mileage achieved by a group of more than 30 Karma owners.
According to the release, the group averaged 150 mpg from the combination of plugging in the car--its electric range is rated by the EPA at 32 miles--and using the range-extending gasoline engine after the battery is depleted on longer trips.
Over 5,500 miles of driving, Fisker said, one Karma driver achieved 57 mpg--which included weekend trips of more than 300 miles.
On the other end, several reported more than 200 mpg of real-world efficiency.
What does 175 mpg actually mean? For one owner, it meant using just 20 gallons of gasoline over 3,500 miles.
It's a small sample, for sure, out of roughly 2,000 Karmas built (as far as we know, since Fisker won't give production or sales figures).
But it underscores the experience of Chevrolet Volt owners, who can also plug in frequently and then use the gasoline engine as a backup once they exceed the car's 38-mile electric range.
Several Volt owners have grumbled that their in-dash display can only show a maximum of 250 mpg.
Fisker also noted that the 2025 fuel-economy requirement for a vehicle the size of the Karma is 45.6 mpg.
Under the test cycles used to calculate corporate average fuel economy--which differ considerably from those for the EPA window sticker--the Karma already achieves 47.3 mpg.
In other words, it meets the more stringent standards that will be required in 13 years, today.
We think that's great, and wish that more makers could say the same thing.
Now, then, about those quality issues and electronic glitches ...
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Actually Volt owners can find out their "MPG" rating from their onstar fuel efficiency page. Many Volt owners are in the 600mpg range... So, this number by Karma is really nothing to be proud of. My Volt has over 4,900 miles and only 28.7 gallon of gas used, that is a MPG over 170. If I stop letting my wife drive it (who has a 200 miles trip), my MPG will be easily in the 250 range....
If Volt owners are truly "electric" about 63% of the time. Then its MPG are easily in the 3 digits range.
For John Briggs, I know those "mpg" numbers ignore the electricity usage. But just for "apple" to "apple" comparison between Volt and Karma....
What Fisker didn't tell you, and Voelcker failed to mention, is that the Karma takes dramatically more electricity per mile then the Chevy Volt. Thus the Karma is the EV equivalent of a Hummer. In fact the Karma has the worst consumption of any electric vehicle on the market, by far.
The high MPG numbers quoted are completely fictitious. Considering the method they are using, the number can read INFINITY mpg under many conditions. Also something Voelcker failed to mention.
These numbers don't relate in any way to EPA MPG or MPGe or anything at all. Perhaps we can call them MPGf (for fictitious). For that matter, let's not call them MPG.
For a PHEV efficiency would be (miles Gas + miles EV) / (gals Gas + kW Electric / 33.7)
where 33.7 is kW energy in a gal of gas. Ignoring some of energy used to travel doesn't make any vehicle more efficient. It would be like a neibor adding a gal, or two of gas when you're not looking and discovering your MPG increased.
The only way to compare MPG values of vehicles is if miles driven on each fuel type are the same distance. (or, if a seperate MPGe is calculated for each fuel type)
Nothing against Karma or Volt drivers; their calcs do prove one thing… how far on average they travel before pumping a gal of gas.
The MPG calculations that ignore the contribution of electricity are grossly misleading and disingenuous.
BTW, perhaps the "KW" in your comment should be "KWH".
I seriously think Karma is "bad design". In terms of the price, you are almost better off buying a $60K Tesla S and a $40K Volt for the price of 1 Karma...
This company has vision. Environmentalists need to support visionaries.
My energy dollars are going to my local electric company and not the Saudi Royal Family.
And the Karma is range extended. I can drive 300 miles if needed with no range anxiety. Green car enthusiasts: please support these revolutionaries. Tesla, Fisker, Nissan, Chevy. This is what we have been dreaming about since we watched Who Killed The Electric Car?
In all of those instances where gas is consumed, the trip was more than 120 miles. So, unless you are telling me to get a Tesla S which other EV currently can get me those range in those trips?
Sure, you will tell me to get a Prius on top of the EV... My Volt is way cheaper than the compbination of the two. Not to mention the extra insurance.
But before that is ready, Volt is by far the "most practical" EV solution today.
Also, if you look at all the Leaf owners, most of them drive less than 40 miles per day as well, which is perfectly well within Volt's range and they don't have to have second car to worry about longer range. Not to mention that Volt comes with battery warranty and better battery design with heating/cooling.
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