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August 31, 2011 Vol. 7, No. 18

is serious about fuel economy. By the 2015 model year, it says a Cascadia with an engine equivalent to an EPA 2007-spec Detroit Diesel, will be between 15% and 20% more fuel efficient. I suppose, given the new EPA/DOT fuel economy/emissions mandate, there’s not a lot of choice in the matter but the new regs don’t demand that sort of improvement until 2018.

In fact, Freightliner’s promising to improve fuel economy by 5% every two years between now and then.

Specifically, that ’07-spec truck with a Series 60 got 6.3 mpg in the company’s own testing regime, but that will rise to 7.9 mpg 4 years from now.

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Rolf Lockwood is editor emeritus of Today's Trucking and a regular contributor to

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