Video: Chevrolet tries to make sense of Volt mileage figures

Chris Shunk — Thu, 23 Dec 2010 14:30:00 EST

Filed under: Hybrid, Sedan, Videos, Chevrolet, GM, Electric

Click above to watch the video after the jump

The 2011 Chevy Volt is, in several ways, like every other car on the road. Four wheels, four doors, a steering wheel... but not every vehicle has a gas engine, electric motor, massive lithium ion battery and a spot to plug into the wall. It's a bit complicated at first, and perhaps more so when looking at the Environmental Protection Agency's official fuel economy figures.

The EPA tells us that the Volt averages 35 miles on an electric charge, but that number can vary anywhere from 25 to 50 miles depending on the conditions. In gas-only mode, the Volt manages 37 miles per gallon. Combine a full tank of gas with a maxed-out electric charge and you can travel a total of 379 miles. Then there is the EPA equation that compares the cost of electricity compared to the typical cost of gasoline, with a resulting efficiency estimation of 93 MPGe. That's miles per gallon equivalent. All-told, the EPA gave the Volt a 60 mpg combined score. So... we're looking at mpg numbers of 37, 93 and 60 mpg. And 35 miles with virtually no gas whatsoever, but really it's between 25 and 50 miles.

You know what... we can explain this until we're blue in the face, but we probably won't do as well as the 2:20 video that is available after the jump. General Motors breaks down the EPA's Mensa label in a language just about anyone can understand. Click through and enjoy.

Gallery: 2011 Chevrolet Volt: First Drive

[Source: YouTube]

Continue reading Video: Chevrolet tries to make sense of Volt mileage figures

Video: Chevrolet tries to make sense of Volt mileage figures originally appeared on Autoblog on Thu, 23 Dec 2010 14:30:00 EST. Please see our terms for use of feeds.

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Volt's EPA rating could be cut by new standards

Dan Roth — Mon, 08 Sep 2008 09:01:00 EST

Filed under: Hybrid, Green, Chevrolet, GM

EPA mileage estimates can be such fuzzy things when you're dealing with hybrid powertrains. We've seen plenty of contention already about real-world results versus EPA numbers for current hybrids, and Chevrolet's upcoming Volt has GM butting heads with the Feds over how the series hybrid eFlex powertrain should be rated. Because the Volt can cover about 40 miles before it needs to fire its range-extending internal combustion engine, it can breeze through the EPA's test cycle with the engine off for 85 percent of the time. With the engine running so little, the Volt could earn an EPA rating above 100 mpg, but the agency is not comfortable with that and wants to change the test for the Volt.

GM argues that altering the test in the way the EPA proposes -- requiring the Volt finish the test with batteries near full charge -- is unfair and won't reflect reality. Moreover, in everyday commuting, the Volt will be an electric car for its first 40 miles, not ever even firing its engine for drivers with commutes short enough or recharging ability at work. The EPA's motivation is to come up with a meaningful mileage rating for the Volt, which will ace the current test. If the Volt gets a rating that is artificially low because the EPA can't figure out a test that correlates to reality, it could also hurt the Volt's case with consumers looking at the $40,000 price tag next to numbers barely better than what a diesel or parallel hybrid can earn.

[Source: Motor Trend]

Volt's EPA rating could be cut by new standards originally appeared on Autoblog on Mon, 08 Sep 2008 09:01:00 EST. Please see our terms for use of feeds.

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