ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations
Green Car Congress
APRIL 10, 2014
l/100 km) at 60 mph (97 km/h) to 33 mpg (7.1 The compact sedan, a 2009 Toyota Corolla with a 1.8-liter liter four-cylinder engine, also suffered as its fuel economy dipped 22% from 42.5 l/100 km), when hauling the rooftop cargo box. Using a rooftop cargo box with the SUV decreased fuel economy from 24.9 l/100 km) at 60 mph to 22.9 l/100 km).
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