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As many as 135,000 GM SUV owners may be reimbursed.

GM will pay back some SUV owners for mistakes in MPG window stickers. The affected models include the Chevy Traverse, GMC Acadia, and Buick Enclave.

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About 170,000 GM customers may be reimbursed.

General Motors is working on a plan to pay crossover SUV owners for fuel-economy overstatement.

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A new House bill proposes decreasing the ethanol fuel-blend mandate.

The minimum requirements for ethanol levels in the US are getting more difficult to reach because cars today getting better fuel economy.

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Following the Mitsubishi scandal that prompted a merger with Nissan, Suzuki admits to using improper tests for fuel consumption.

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The widening scandal could lead to Nissan gaining control.

Mitsubishi says its shady fuel-economy test practices may have been used on all vehicles it sells and has sold in Japan.

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A study launched by VW and Shell looks to biofuels as a better way to achieve climate goals. Others see it as an attempt to block fuel-economy targets.

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More Fuel Economy Follies

When you spend a year in a bunch of cars, you can start to track facts and figures. In this episode, comparing real-world MPG with what the EPA says.

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Falsified fuel mileage claims limited to cars sold outside the United States.

After checking and re-checking its data, Mitsubishi North America announces that US market cars are cleared of any mpg-related wrongdoing.

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While that's just 1 percent of total fuel consumption, it's no small number.

Roof racks waste increasing amounts of fuel through aerodynamic drag, but better design — and government policy — would help save gas.

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Mitsubishi has falsified fuel economy data of 625,000 small cars, and most were built for Nissan.

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Don't look for a plug-in a Mazda any time soon.

Mazda's Jeff Guyton says that the company's Skyactiv fuel efficiency plan will work, without the immediate need for hybrids or EVs.

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CMU offers the EPA info on how to incorporate self-driving tech into testing.

Incorporating autonomy into EPA driving cycles could influence how automakers program their cars.

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It's not quite the best but among the strongest in the class.

The 2017 Chrysler Pacifica gets 28 mpg fuel economy highway, 18 mpg city, and 22 mpg combined, which puts it up at the top of current minivans.

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VW scandal spurred Peugeot Citroen's efforts for better diesel efficiency measurement.

French automaker Peugeot Citroen releases more realistic fuel-economy figures for three diesel models.

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How realistic is reaching the 2025 CAFE mandate now?

New-vehicle fuel economy has stayed about the same for the past two years.

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New Cars Were More Efficient Despite Drop In Hybrid, Plug-in Sales

New-vehicle fuel efficiency rose slightly last month as Americans bought fewer trucks and SUVs than in December.

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If You're Wayne Gerdes, Anyway

CleanMPG tests the all-electric range of the 2016 Chevrolet Volt, and goes 111.9 actual miles on a single charge.

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Gas prices could stay below $3 a gallon through the end of 2016. But then what?

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Improvements On CO2 Emissions Also Plateau, But It's Not All Bad News

Fuel economy and emissions levels for the nation's automakers showed no improvement year over year, according to the latest numbers released by the Environmental Protection Agency. But that doesn't mean manufacturer's are doing a bad job.

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Last Month, The Average Dropped To 25.0 MPG

The new cars we buy in the US are getting consistently worse fuel economy than just a few months ago.

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54 City, 50 Highway, 52 Combined For Most Trims

A Toyota rep confirms the fuel economy for the 2016 Toyota Prius at 54 city, 50 highway, and 52 combined for five of the six trims. The Prius Eco does even better.

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