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William Maley Staff Writer - CheersandGears.com October 4, 2013 The Environmental Protection Agency announced plans to release their results of fuel economy audits done on twenty vehicles. Christopher Grundler, head of the EPA's Office of Transportation and Air Quality tells Automotive News the audits looked at a specific portion of the test cycle known as the coast-down test. The coast-down test has a vehicle run up to 80 MPH and then is allowed to glide to a stop. This test measures the aero of the vehicle, the rolling resistance of the tires, and amount of friction in the drivetrain. That data is then put into a dynamometer that an automaker uses to run its vehicle through the EPA test. This is what tripped-up Hyundai and Kia in their fuel economy ratings for a certain number of vehicles last year. With the EPA's small staff, it typically only audits a small number of automaker's mpg results for new vehicles. Plus, the coast-down test was never really a focus of their investigations. That changed in 2010 as EPA wanted to deter automakers from inflating their fuel economy ratings. Grudnler declined to reveal specifics of the EPA’s report, but did say "will be very interesting to some people." Source: Automotive News (Subscription Required) William Maley is a staff writer for Cheers & Gears. He can be reached at [email protected] or you can follow him on twitter at @realmudmonster. -
William Maley Staff Writer - CheersandGears.com October 4, 2013 The Environmental Protection Agency announced plans to release their results of fuel economy audits done on twenty vehicles. Christopher Grundler, head of the EPA's Office of Transportation and Air Quality tells Automotive News the audits looked at a specific portion of the test cycle known as the coast-down test. The coast-down test has a vehicle run up to 80 MPH and then is allowed to glide to a stop. This test measures the aero of the vehicle, the rolling resistance of the tires, and amount of friction in the drivetrain. That data is then put into a dynamometer that an automaker uses to run its vehicle through the EPA test. This is what tripped-up Hyundai and Kia in their fuel economy ratings for a certain number of vehicles last year. With the EPA's small staff, it typically only audits a small number of automaker's mpg results for new vehicles. Plus, the coast-down test was never really a focus of their investigations. That changed in 2010 as EPA wanted to deter automakers from inflating their fuel economy ratings. Grudnler declined to reveal specifics of the EPA’s report, but did say "will be very interesting to some people." Source: Automotive News (Subscription Required) William Maley is a staff writer for Cheers & Gears. He can be reached at [email protected] or you can follow him on twitter at @realmudmonster. View full article -
By William Maley Staff Writer - CheersandGears.com February 14, 2013 After the whole Hyundai-Kia mileage fiasco, the EPA says it will be conducting more fuel economy audits. Jeff Alson, a senior EPA engineer said at a conference about the government’s 2025 fuel economy standard that the agency performs “routine audits” of manufacturer's mileage claims, but does admits more can be done. “We’ll probably do more of that in the future than we did in the past,” Alson said. Alson also told the conference that the EPA also needs to do a better job of communicating real-world mileage with customers. “Everybody wants a label that tells you exactly what you’re going to get, but obviously that’s not possible. A good general rule of thumb is that real-world fuel economy is about 20 percent lower than the lab numbers.” Source: Automotive News (Subscription Required) William Maley is a staff writer for Cheers & Gears. He can be reached at [email protected] or you can follow him on twitter at @realmudmonster. -
Industry News: EPA: More Gas Mileage Audits Are Coming
William Maley posted a topic in Industry News
By William Maley Staff Writer - CheersandGears.com February 14, 2013 After the whole Hyundai-Kia mileage fiasco, the EPA says it will be conducting more fuel economy audits. Jeff Alson, a senior EPA engineer said at a conference about the government’s 2025 fuel economy standard that the agency performs “routine audits” of manufacturer's mileage claims, but does admits more can be done. “We’ll probably do more of that in the future than we did in the past,” Alson said. Alson also told the conference that the EPA also needs to do a better job of communicating real-world mileage with customers. “Everybody wants a label that tells you exactly what you’re going to get, but obviously that’s not possible. A good general rule of thumb is that real-world fuel economy is about 20 percent lower than the lab numbers.” Source: Automotive News (Subscription Required) William Maley is a staff writer for Cheers & Gears. He can be reached at [email protected] or you can follow him on twitter at @realmudmonster. View full article
