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2011 edition of EPA Fuel Economy Trends report shows several advanced powertrain technologies making significant gains

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to 8.3%) and is projected to triple from MY 2009-2011 (to 13.7%); turbocharging is projected to double in MY 2011 (from 3.5% to 7.4%); cylinder deactivation is projected to nearly double in MY 2011 (from 6.4% to 11.1%); and both 6-speed and 7-speed transmissions approximately doubled from MY 2009-2011 (from 24.7%

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Increased sales of larger vehicles in June lowered average new car fuel economy from May; increase in fuel economy year-on-year

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TrueCar.com provided actual fuel economy numbers from June US light vehicle auto sales that indicate “TrueMPG” will increase to 21.6 mpg US in June 2011 compared to 21.3 mpg in June 2010, but decreased from May 2011 at 21.9 mpg in June 2011, up from 21.3 Average small car TrueMPG June 2010 v.

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EPA annual report on CO2, fuel economy and technology trends finds 2012 heading for all-time best; rapid adoption of new technologies

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Adjusted CO 2 emissions and adjusted fuel economy, MY 1975-2011. Data for MY 2011 are final; data for MY 2012 are preliminary and based on projected vehicle production values provided to EPA by manufacturers. Source: EPA. Click to enlarge. l/100 km), both slightly worse relative to MY 2010.

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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

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Manufacturer-specific technology adoption over time for key technologies. The majority of the emissions and fuel savings from current vehicles, EPA noted, is due to new gasoline vehicle technologies. The final model year (MY) 2012 adjusted, real world CO 2 emissions rate is 376 g/mi—a 22 g/mi decrease (-5.5%) relative to MY 2011.

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Study finds that increased vehicle travel and decreased occupancy have undercut the impact of improving fuel economy over last 40 years

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Sivak found that while the vehicle fuel economy of the entire light-duty fleet improved by 40% (from 13 mpg US to 21.6 l/100km), because of the decrease in vehicle load, the occupant fuel economy only improved by 17% (from 24.8 According to the 2011 American Community Survey by the US Census Bureau, 79.9%

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Cummins/Peterbilt SuperTruck shows 54% improvement in fuel economy, 61% improvement in freight efficiency

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The new SuperTruck achieved a 54% increase in fuel economy. and Peterbilt Motors Company, a division of PACCAR, released test results showing their demonstration SuperTruck tractor-trailer achieved a 54% increase in fuel economy, averaging nearly 10 mpg US (23.5 Click to enlarge. Cummins Inc.

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Average fuel economy of new vehicles in the US climbed to 23.0 mpg in January

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The average fuel economy of new vehicles sold in the US. in November 2011 (a decrease of 14% from October 2007). in November 2011 (a decrease of 14% from October 2007). The EDI takes into account both vehicle fuel economy and distance driven (the latter relying on data that are published with a two-month lag).