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Following the lowering of estimated fuel economy figures from companies like Ford, Hyundai, Kia and even a handful of Mercedes-Benz sedans in the recent past, the Environmental Protection Agency is cracking down by mandating new mileage testing procedures by the end of the year, after first considering some changes months ago. The improved evaluations should make the numbers that buyers see on the window sticker of a vehicle closer to what they experience in the real world.

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According to a report from Reuters, South Korea's government has drafted strict new rules for automakers to follow when calculating fuel economy. The legislation comes after a major snafu by Hyundai and Kia that resulted in the automakers lowering the estimated fuel mileage of many popular models – some by several miles per gallon, including the Soul subcompact above – and compensating owners in the US and Canada for the reduction.

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Automakers don't necessarily sell the same vehicles in both North America and Europe, but a new report from the Continent's Transport And Environment makes it sound like the fuel-economy rating... questions we've seen here in the US might also be happening across The Pond. Well, except over there it sounds like full-on legal cheating.

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You knew this was coming. Shortly after Hyundai and Kia admitted that their internal processes for calculating fuel economy were flawed, resulting in a major program to compensate drivers for lower-than-advertised mile-per-gallon numbers and the re-rating of a large percentage of the two-headed Korean automaker's vehicles, we have word of a lawsuit.

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Doesn't the EPA test the fuel economy of all new vehicles? Actually, no.

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Taking A Detailed Look At Why 'Your Mileage May Vary'

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It seems like it was just a few years ago that car manufacturers used to laugh at us when we'd ask why a new model didn't get any better fuel economy than its outgoing predecessor. "Car buyers don't care about fuel economy," was the refrain, "They certainly won't pay for it."

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It seems like it was just a few years ago that car manufacturers used to laugh at us when we'd ask why a new model didn't get any better fuel economy than its outgoing predecessor. "Car buyers don't care about fuel economy," was the refrain, "They certainly won't pay for it."

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Less than a year after everyone with any sort of say in the matter seemed to agree that 54.5 miles per gallon by the year 2025 was a properly attainable goal, the California Air Resources Board has decided to change things up a bit.

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Less than a year after everyone with any sort of say in the matter seemed to agree that 54.5 miles per gallon by the year 2025 was a properly attainable goal, the California Air Resources Board has decided to change things up a bit.

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The Obama Administration has reportedly disclosed its CAFE target for 2025, and it's not the 62 miles per gallon that's been discussed in Washington, D.C. for some time now.

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Pop quiz: Say you split your driving evenly between a 21 mpg SUV and a 75 mpg Vespa scooter. What would your average miles per gallon be? If you answered 48 mpg you're not alone, as that's what Vespa came up with in their infographic we posted last week (reposted above). The only problem is that that answer is wrong. The real average is 32.8 mpg.The reason for the large difference is that in order to correctly calculate average mpg, you can't simply add both numbers and divide by two. You have t

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A CAFE standard of up to 62 miles per gallon by 2025, which we first heard about last October, will certainly increase the cost of vehicles, but by how much varies depending upon who you ask. Automotive News (via AutoWeek) has gathered a few opinions and estimations on how this will affect vehicle pricing and people's pocket books over the life of a vehicle.

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According to the Environmental Protection Agency, it will cost automakers an average of $948 to meet the 34.1 mile per gallon Corporate Average Fuel Economy standards that will be adopted in the United States in 2016. The current standard sits at 27.5 mpg. The EPA estimates that the average owner will save some $4,000 in fuel costs over the life of the vehicle, resulting in a net savings of over $3,000 per owner.

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According to the Environmental Protection Agency, it will cost automakers an average of $948 per car to meet the 34.1 mile per gallon Corporate Average Fuel Economy standards that will be adopted in the United States in 2016. The current standard sits at 27.5 mpg. The EPA estimates that the average owner will save some $4,000 in fuel costs over the life of the vehicle, resulting in a net savings of over $3,000 per owner.

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According to the Environmental Protection Agency, which first started keeping track of such things way back in 1975 around the time of the first fuel crisis in America, the average fuel economy of all vehicles sold in the U.S. hit a record high in 2009. For those favoring hard data, that equals 22.4 miles per gallon. Not surprisingly, average fuel economy has been on an upward path over the last several years (excluding a small dip in 2008).

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2011 Hyundai Sonata Hybrid – Click above for high-res image gallery

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2011 Hyundai Sonata Hybrid – Click above for high-res image gallery

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A CAFE standard of 62 miles per gallon by 2025 might indeed come to pass. The Department of Transportation and the Environmental Protection Agency today released a "Notice of Intent to Improve Fuel Economy and Reduce Greenhouse Gas Emissions for 2017-2025" (PDF) that includes, as one possibility, decreasing greenhouse gas emissions by six percent a year for the years in question. A drop that steep would put us on track for 62 mpg, but the agencies are also looking at three, four and five percent

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