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Official

So, how does that compare with its most obvious rivals?

Open Road

We run through some questions to ask yourself if you are shopping for an electric vehicle. Many factors impact the decision, like whether to go new or used.

Study

Fuel-Efficiency Down 0.6 MPG From August 2014 Peak

The average US new-car fuel economy fell 0.2 miles per gallon to 25.2 mpg for April.

By The Numbers

Nissan Leaf Sales Fall, While Toyota Green Car Sales Little Changed

US green-car vehicle sales in January fell 8.6 percent from a year earlier, as Ford, General Motors falter.

Official

Fuel Economy Rose In January, But Remains Below August 2014 Peak

Average US new-car fuel economy rose 0.3 miles per gallon to 25.4 mpg in January, according to new numbers from UMTRI.

Report

It's almost impossible not to notice that it's a lot cheaper to fill up at the gas station in the latter portion of this year. As of December 1, the US Energy Information Administration said the average cost of a gallon of gas was $2.778, down almost 50 cents from a year ago. In general, fuel prices have been on the decline for much of 2014, and the effects have started showing themselves with people seemingly more willing to buy lower efficiency vehicles.

Report

If you say a car – the Ford C-Max Hybrid, for example – is "fun to drive," can anyone really come up with some empirical evidence against your claim? What about calling it "versatile"? We wonder if Ford has been thinking along these lines when it talks about the green little hatch.

Report

What, you expected the "fastest muscle car ever" to help fleetwide fuel economy? Nope, don't think that's going to happen. That means Fiat Chrysler will likely to continue to languish at the bottom of the heap when it comes to fleetwide fuel economy among the largest automakers serving the US, especially as the automaker starts to sell its Dodge Challenger SRT Hellcat. A few hundred Fiat 500E electric vehicles aren't going to turn the trend around.

Study

Talk about a report both green-car advocates and gearheads can celebrate. The US Environmental Protection Agency (EPA) put out its annual Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends report. And the 148-page study has something for everyone.

Fuel economy is up almost 5 mpg since 2004

Gas mileage for new cars and trucks in the U.S. averaged a record 24.1 miles per gallon last year, but gains in fuel economy are slowing.

Official

For prospective buyers of Elio Motors' super-fuel-efficient vehicle set to debut next year, one day may cost you $250. For a car that costs $6,800, that's a decent chunk. You've been warned.

Official

That silence you hear? It's a month's worth of payments on the family car-insurance plan not being spent on an idling engine. That's one way to look at new numbers out from the AAA that say stop-start engine technology will save drivers a solid chunk of change in the form of lower refueling costs. If only more automakers would embrace the tech for their vehicles.

Report

The agency thinks the new approach will result in more realistic ratings, especially for hybrids.

Report

Go figure. That's what we're saying after fleetwide fuel economy of new cars purchased in January rose during a month when green-car sales fell yet again.

Report

Oh, Canada, indeed. A husband-and-wife team set out to see what kind of fuel economy numbers they could get out of a Chevrolet Cruze Diesel on a transcontinental drive, and they ended up hitting some pretty impressive numbers. The team, according to their Driving.ca blog, averaged 4.3 liters of fuel use per 100 kilometers for their 5,956-kilometer (3,701-mile) jaunt from Vancouver to Halifax. That maps out to about 55 miles per gallon. And the drivers weren't total slow pokes, averaging about 50

Official

Ricardo Plc appears to be adhering to an "it takes a village" approach to ratcheting up US fleetwide fuel economy levels to the higher Corporate Average Fuel Economy standards the federal government set for 2025. Last year, the US government finalized the new CAFE standards, which call for increasing fleetwide fuel economy starting in 2017 and ending at 54.5 miles per gallon (about 40 mpg in "real world" terms) by 2025.

Report

Plug-ins may be getting a lot of the attention from folks looking to cut emissions, but no one is forgetting the good old-fashioned turbocharger. In the end, turbos might even have a far larger impact.

Official

As the Beatles succinctly put it: "It's getting better all the time." That's how we can characterize US new-vehicle fleetwide fuel economy, which last month marked the third straight in which US new vehicles set an all-time record for fuel economy.

Report

One Washington, DC-based startup is looking to create a market for trading automaker "credits" that will allow gas-guzzler makers to "meet" stricter US fuel-economy requirements during the next few years, Automotive News reports.

Official

The average fuel economy for a new car in the US made a record single-year jump, according to new data from the US Environmental Protection Agency. Fleetwide fuel economy rose a record 1.4 miles per gallon to an all-time high of 23.8 mpg, the EPA says. During the past five years, average new-vehicle fuel economy went up 16 percent while emissions decreased 13 percent. Check out the EPA's press release below and find further information here.