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The Society of Automotive Engineers and the National Renewable Energy Laboratory are recommending that the EPA come up with two different ratings for plug-in vehicles: miles per gallon and electricity per mile.
The two groups will finalize their proposal within the next six months, hoping to prevent the EPA from coming up with a rating that combines gas and electricity mileage like the sky-high MPG claims GM and NIssan recently came up with for their plug-in models. Jeff Gonder, an NREL researcher says "If you combine them into one (number) artificially, you can't derive a final output like annual costs."
If fuel efficiency is stated in terms like electricity per mile and gallons per mile, the cost of fuel in both forms is immediately apparent to the consumer.
NREL is also coming up with a new way to judge fuel efficiency with dynamometers. Instead of just putting the car on the machine and seeing how far it can go until the tank is empty, a procedure that doesn't reflect actual performance for plug-ins, the researchers are mimicing average driving behavior on the machines to come up with average yearly fuel costs.
via CNET
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written by driving courses, October 08, 2009
This all sounds very good.
But lets face it - the way they charge tax on everything it will end up being just as expensive to run an electric car as a petrol!
But lets face it - the way they charge tax on everything it will end up being just as expensive to run an electric car as a petrol!
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But lets face it - the way they charge tax on everything it will end up being just as expensive to run an electric car as a petrol!
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written by Bill Eich, October 15, 2009
For hybrid car mileage I propose a simple common test:
Fill gas tank and charge batteries fully, then put vehicle on track, drive at steady speed (fixed by someone, say 60 mph) for as long as the gas and battery hold out. Then use total miles driven and figure out
the mileage.
Bill Eich
Fill gas tank and charge batteries fully, then put vehicle on track, drive at steady speed (fixed by someone, say 60 mph) for as long as the gas and battery hold out. Then use total miles driven and figure out
the mileage.
Bill Eich
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They should also provide three numbers like: mostly highway driver, mostly city driver, a good mix of driving.
This is actually complex stuff, which most people could understand, but how many take the time to use it as a strong deciding factor when car shopping - especially when gas is so cheap!