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ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations

Green Car Congress

Researchers at Oak Ridge National Laboratory (ORNL) have quantified the fuel economy effects of some common driver practices and vehicle accessories or alterations—including underinflated tires, open windows, and rooftop and hitch-mounted cargo. They presented their results in a paper at SAE 2014 World Congress in Detroit.

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Audi announces pricing and fuel economy for 2014 Audi A6, A7 and Q5 TDI diesels

Green Car Congress

Audi has now announced pricing and fuel economy figures for the 2014 A6, A7 and Q5 TDI models, expected to begin arriving at US dealers in late Summer 2013. The 2014 Audi A8 L was already recently introduced. EPA estimated fuel economy figures for the clean diesel introductions are as follows: Audi MY 2014 US diesel lineup.

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2014 Cascadia Evolution Class 8 rig delivers 10.67 mpg on closed-track demo; 7% better fuel economy than EPA 2010 Cascadia in cross-country tour

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The Freightliner Trucks 2014 Cascadia Evolution—powered only by the newly designed Detroit DD15 engine and featuring enhanced aerodynamic specs—delivered fuel economy of 10.67 mpg US (22 L.100km) mile closed-course track for 1,000 miles nonstop at an average speed of 60 mph, with a GCW of 76,000 lbs.

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Infiniti Q80 Inspiration concept hybrid delivers 550 hp with 42.8 mpg fuel economy

Green Car Congress

Infiniti unveiled the Q80 Inspiration concept car at the 2014 Paris Motor Show, it what it called a signal of its intent to break into the top tier of the premium sedan category; the concept will lead to a future model. mpg US) and CO 2 emissions of about 129 g/km. L/100 km (42.8 Q80 Inspiration. Click to enlarge.

Infinity 281
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GM to introduce strong hybrid version of Malibu; combined fuel economy above 45 mpg; leverages Volt

Green Car Congress

Using technology from the 2016 Chevrolet Volt propulsion system ( earlier post ), Malibu Hybrid will offer an estimated combined fuel economy rating exceeding 45 mpg (5.22 EGHR improves engine warm up and assures consistent fuel economy performance in cold weather. engine with start/stop. An all-new direct-injection 1.8L

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Audi TDI models trounce EPA fuel economy ratings during “Truth in 48” cross-country efficiency drive

Green Car Congress

Three new Audi TDI clean diesel models far exceeded their EPA fuel economy ratings in completing the “Truth in 48” cross-country efficiency drive that covered more than 2,850 miles between Southern California and New York. Results were: A6 TDI: 43.561 mpg at an average speed of 62.44 A7 TDI: 42.653 mpg at an average speed of 62.17

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Study finds 6.3% spread in fuel economy obtained with maximum and minimum rolling resistance tires

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spread between the fuel economy obtained with maximum and minimum rolling resistance tires. The US Transportation Research Board estimates that a 10% increase in tire rolling resistance will result in about a 1-2% decrease in the fuel economy of light-duty vehicles. mpg (RRf at 8.1 mpg (RRf of 12.1 mpg (RRf at 9.9