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Opel P1 376-MPG Record-Holder Still For Sale, At $425,000

Green Car Reports

The owner of the one-and-only 1959 Opel P1 experimental prototype--which set a Guinness World Record of 376 mpg in a 1973 test--hopes that will change. The car is still for sale, now via James Edition website--which bills itself as "The World''s Luxury.'

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Actual vehicle MPG improvement has stagnated since 2008

Green Car Reports

Though vehicles for sale today are more efficient than they've ever been, the average fuel economy of America's operating fleet has remained relatively stagnant since George W. Bush was President, research shows.

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More Fisker Bad News: EPA Calls 20-MPG Karma A Subcompact

Green Car Reports

The startup electric-car company finally got its car approved for sale, many months late, only to have the EPA rate its gas mileage at just 20 mpg in range-sustaining mode. It's been a tough week for Fisker.

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2014 Mazda6 Sedan: 31 MPG Combined (Or So), But Not For Sale

Green Car Reports

In olden days, new models for the following year came out in September. Now, they're all over the calendar. The latest example is the 2014 Mazda Mazda6 sedan, of which several hundred already sit in Mazda showrooms across the country. Its highly efficient 184-hp SkyActiv 2.5-liter

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2017 Audi A4 Ultra: 31-mpg version of luxury sedan

Green Car Reports

So far, none of these models have been offered for sale in the U.S., Audi offers efficiency-focused "Ultra" versions of several of its models in Europe that are designed to achieve maximum fuel economy with conventional internal-combustion powertrains. That's about to change with the introduction of the 2017 Audi A4 Ultra sedan, which.

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Honda boosts performance and fuel economy on 2013 CR-Z Sport Hybrid Coupe using new Li-ion pack

Green Car Congress

The new, more powerful Lithium-ion battery pack helps boost EPA-rated fuel economy figures by 1 mpg city for CVT equipped models, and 1 mpg highway for CR-Z models equipped with the six-speed manual transmission. On CVT-equipped models, the EPA city/hwy/combined rating is up 1 mpg city to 36/39/37 mpg (6.53/6.03/6.36

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EPA trends report sees record levels of average new vehicle fuel economy and CO2 emissions for MY 2012; role of new gasoline vehicle technologies

Green Car Congress

mpg higher (+5.4%) than MY 2011. mpg fuel economy improvement from MY 2011 to MY 2012 is the second largest annual improvement in the last 30 years. mpg, or 22%. There are 15 MY 2013 pickup and minivan/van models for which at least one variant of the model has a combined city/highway label fuel economy rating of 20 mpg (11.8