Truck prices will likely go up - but fuel savings could reach $20,000 annually.

While federal authorities continue debating a massive jump in fuel economy standards for passenger cars and light trucks, a big increase in mileage requirements for heavy-duty vehicles is set to be formally announced as early as today.

The Environmental Protection Agency and the Department of Transportation are reportedly set to require increases of anywhere from 10% to 20% in fuel economy, depending on the size of the truck.  The new standards would cover everything from 18-wheelers to school buses, garbage trucks to heavy-duty pickups.

The new rules, which would go into effect in 2014 and extend through 2018, would require a 20% increase in the mileage of the long-haul trucks that handle a huge percentage of America’s freight shipments.

Such trucks are routinely driven 150,000 miles or more annually, and average between 5 and 8 mpg.  That means the proposed increase might save as much as 6,000 of fuel per long-haul truck – the equivalent of what a dozen automobiles consumer annually.

In all, medium and heavy-duty trucks consume about 20% of the transportation fuel used in the United States.

The proposed increase would be a “win-win situation for the country, the economy, climate change and energy security,” Marge Oge, director of the EPA’s Office of Transportation and Air Quality, said last week.

President Barack Obama has moved the issue of fuel economy to the front burner since taking office.  His administration has already approved new standards mandating a minimum 35.5 mpg by 2016 for passenger cars and light trucks.  And a debate is underway on where to go next; current proposals could push the light-duty Corporate Average Fuel Economy, or CAFE, standard to anywhere from 47 to 62 mpg by 2025.

At a session in the White House Rose Garden, last May, the president was joined by major truck manufacturers as he proclaimed it possible to boost heavy-duty fuel efficiency by 25% using existing technologies.  He promised to put in place the revised standards expected to be revealed today.

The government has also been offering financial assistance – including $187 million in aid delivered last January – to encourage the development of advanced truck propulsion systems, such as heavy-duty hybrid drivelines.  Hybrid technology is already going into extensive use on short-haul bus fleets where stop-and-go driving yields major improvements in mileage.

While the proposed increases in medium and heavy-duty truck mileage will almost certainly increase vehicle costs, proponents contend there will be a rapid payoff.  At the current price of diesel, around $3 a gallon nationwide, a fleet or owner/operator could stand to save nearly $20,000 annually with a 20% bump in mileage.

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