Richard230

25 November 2010, 1242

The numbers go round and round. In an article titled "Electric Volt will get up to 93 mpg" written by Tom Krisher of the AP, it states that the Chevy Volt will get the equivalent of 93 miles per gallon of gasoline, according to Chevrolet. The claim is that when the IC motor is running it will get 37 mpg and in a drive cycle that combines both battery power and generator power, it will get 60 mpg. These figures are estimates from the US EPA and will appear on the Volt's window sticker. The article notes that GM had originally estimated that the car would get the equivalent of 230 mpg in city driving according to their calculations. In the Volt's full-electric mode, it is expected to get the equivalent of 95 mpg in the city and 90 mpg on the highway, according to EPA estimates. Running on only the IC generator, the car is expected to get 35 mpg in the city and 40 mpg on the highway.

The article says that Nissan said earlier this week that the Leaf would achieve the equivalent of 106 mpg in city driving and 92 mpg on the highway.

The article goes on to say that the Volt takes 12.9 kWh to recharge the car at 240 volts (doesn't it take the same amount of energy to charge at 120V?). The calculation is based on a formula that equates 33.7 kWh to the use of one gallon of gasoline. This is highlighted for those of you that want to race IC motorcycles against electric motorcycles and are looking to establish some rules for your new racing association.

So I am really confused about these numbers. It seems like mpg figures for EVs and the like are tossed around by manufacturers by throwing darts at a dartboard full of mpg numbers to see what sticks with the government. I am looking forward to the public buying these vehicles and then hearing what they tell reporters the sort of mileage that they actually get - or think they get. I'll bet the method of figuring "mpg" by the government will change once they get public real world "feedback".

And don't forget public perception is 99% of reality in the US. :rolleyes:

The article says that Nissan said earlier this week that the Leaf would achieve the equivalent of 106 mpg in city driving and 92 mpg on the highway.

The article goes on to say that the Volt takes 12.9 kWh to recharge the car at 240 volts (doesn't it take the same amount of energy to charge at 120V?). The calculation is based on a formula that equates 33.7 kWh to the use of one gallon of gasoline. This is highlighted for those of you that want to race IC motorcycles against electric motorcycles and are looking to establish some rules for your new racing association.

So I am really confused about these numbers. It seems like mpg figures for EVs and the like are tossed around by manufacturers by throwing darts at a dartboard full of mpg numbers to see what sticks with the government. I am looking forward to the public buying these vehicles and then hearing what they tell reporters the sort of mileage that they actually get - or think they get. I'll bet the method of figuring "mpg" by the government will change once they get public real world "feedback".

And don't forget public perception is 99% of reality in the US. :rolleyes: