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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. liter four-cylinder engine, also suffered as its fuel economy dipped 22% from 42.5

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EPA fuel economy report finds weight and power leveling off, footprint stable

Green Car Congress

EPA recently released the latest edition of its annual report Light-Duty Automotive Technology, Carbon Dioxide Emissions and Fuel Economy Trends. The report is the authoritative reference for real-world fuel economy, technology trends and tailpipe carbon dioxide emissions, for new personal vehicles sold in the US every year since 1975.

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ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

Vehicle installed on the chassis dynamometer in the ORNL vehicle research laboratory. Oak Ridge National Laboratory (ORNL) staff have been performing vehicle research and testing in support of the fueleconomy.gov website. legal light-duty vehicles from 1984 to present. Click to enlarge.

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Toyota’s new RAV4 plug-in hybrid SUV offers 39 miles AER, 90 MPGe

Green Car Congress

In addition to an ability to do 0-60 mph in a projected 5.8 seconds—the second quickest acceleration time in the Toyota lineup—the 2021 RAV4 Prime has an estimated 39 miles of all-electric range—the highest AER of any PHEV SUV on the market. liter gas V6 engine that reached 0-60 mph in 6.3-seconds—a

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Mercedes-Benz previews new GLA compact SUV; fuel economy as high as 54.7 mpg in diesel version

Green Car Congress

Mercedes-Benz previewed the new 2015 GLA-Class compact SUV prior to its global debut at the International Motor Show (IAA) in Frankfurt next month. The GLA, which will go on sale in 2014, is Mercedes-Benz’ first entry into the fast-growing compact SUV segment. Mercedes-Benz, SUVs and compacts. Earlier post.)

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Rivian R2 bows: $45,000, over 300 miles, the future of the SUV?

Baua Electric

The Rivian R2 is two years away, but with the debut of an R2S in prototype form Thursday, it’s clear this electric SUV will arrive with a proposition unlike any EV yet: A boxy silhouette, rugged off-road chops, a range easily topping 300 miles, and a target price effectively below today’s average new-vehicle price, regardless of the fuel.

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Consumer Reports testing finds many small turbo engines underperforming; fuel economy, acceleration no better than in larger conventional powertrains

Green Car Congress

Consumer Reports’ own fuel economy tests of vehicles equipped with small turbocharged engines has found in many cases that the turbocharged cars tested by CR have slower acceleration and no better fuel economy than the models with larger conventional engines, the organization said. l/100 km) figures—i.e., Earlier post.).