The October 2006 issue of Consumer Reports contains a five-page cover story headlined "The Ethanol Myth." The story says CR staffers put a 2007 Chevrolet Tahoe flexible-fuel vehicle through an array of tests and interviewed more than 50 experts on the fuel.
As a result, the magazine says, "CR determined that E85 will cost consumers more money than gasoline and that there are concerns about whether the government's support of FFVs is really helping the U.S. achieve energy independence."
Among the problems noted by CR: The fuel economy of the Tahoe dropped 27 percent when running on E85, compared with gasoline, falling from an already low 14 mpg overall to 10 mpg. "This is the lowest fuel mileage we've gotten from any vehicle in recent years," the magazine noted.
And when CR calculated the Tahoe's driving range, it decreased to 300 miles on a tank of E85 as opposed to 440 miles on gas. "So you have to fill up more often on E85,'' the magazine pointed out.
Just getting the fuel to use in the test proved a major problem -- there are no commercial E85 filling stations in Connecticut, where CR has its auto testing station. The magazine had to buy its ethanol from a wholesaler in Alabama at $2.90 a gallon, then get a certified expert to blend it with gasoline to create E85.
But CR points out that FFV purchasers needn't worry if E85 is not widely available, or is more expensive than gasoline, because FFV engines can run on either fuel, or any blend of the two.
While E85 fuel consumption is significantly higher than gasoline, CR does point out that there is a good reason for that: FFV engines are designed to run more efficiently on gasoline. CR states that the auto industry to change that if it wanted to. "E85 fuel economy could approach that of gasoline if manufacturers optimized engines for that fuel," the report says.
CR also points out that U.S. energy policy is actually encouraging consumers to use more fuel. "The FFV surge is being motivated by generous fuel-economy credits that auto-makers get for every FFV they build, even if it never runs on E85. This allows them to pump out more gas-guzzling large SUVs and pickups, which is resulting in the consumption of many times more gallons of gasoline than E85 now replaces," the report says.
CR notes that sources other than Midwestern corn can make for a better ethanol product -- sugarcane, wood pulp and rye straw, for instance. Researchers are also developing cellulosic ethanol technology to produce ethanol more efficiently from other varieties of plant matter, which could radically increase global production.
One scientist tells CR that cellulosic ethanol also "has the ability to reduce CO2 emissions by close to half," compared with corn ethanol.
CR notes that ethanol proponents argue that despite its drawbacks, ethanol needs to be developed "because petroleum is a finite resource that is rapidly being depleted." CR adds that ethanol requires fewer technological breakthroughs and less infrastructure developments than batteries of fuel cells.
Converting gas stations can cost as much as $200,000, according to the American Petroleum Institute. This figure seems high, and the API, a petroleum industry association, is not known for its objectivity when it comes to alternative fuels. Inland Fuels told me it cost them about $30,000 to convert the pumps at it's new E85 station in Tallahassee this month. That was covered by a 30% tax credit.
In conclusion, CR says it supports "the pursuit of more efficient ethanol production," and would like to see incentives "that motivate automakers to build more fuel-efficient models that today's buyers want."
Click here to read the full story online.
In a separate item, CR also reports this month that new diesel cars powered by a new blend of cleaner, ultra-low-sulphur diesel fuel are hitting the road. The first vehicle to take advantage of the new fuel is the 2006 VW Touareg V10 Tdi SUV. VW is also planning to bring out a VW Jetta in 2008. This new fuel will meet clean air regulations which have in the past kept diesel cars from being sold in all 50 states.
CR points out that diesel cars typically get about 30% better fuel economy that gasoline cars.
- Craig Pittman and David Adams