5.5 and 6.5 mpg.
In 312 miles of testing, the SuperTruck returned the near-10 mpg figure with a gross weight of 65,000 pounds. Some of the other statistics associated with the truck's efficiency are even more eye-opening. Consider, for example, the fuel savings of a truck that achieves 54 percent better than usual economy. Over 120,000 miles per year, the average truck would use $25,000 less diesel. It would also result in a 35 percent reduction in greenhouse gases per truck. The truck standard has to rise from 23.5 mpg to 28.8. This means cars must improve by 37 percent, trucks by 23 percent. Combined, cars and trucks in 2016 should average 34.1 mpg, up 35 percent from the current 25.3 mpg—a jump of 5.1 percent per year. The tractor-trailer had a combined gross weight of 65,000 lbs. Today's long-haul trucks typically achieve between 5.5 and 6.5 mpg. The 54 percent increase in fuel economy would save about $25,000 annually based on today's diesel fuel prices for a long-haul truck traveling 120,000 miles per year. Average Fuel Economy - 19 Miles Per Gallon (16 MPG in the city and 21 MPG on the highway). This pickup truck offers an amazing 390 horsepower, 735 foot pounds of torque and still gets an average fuel economy of 19 Miles per gallon. That is simply amazing for a pickup truck of this size. Shares & Saves. Save. Though the average tractor trailer fuel mileage of between 7 to 8 miles per gallon (MPG) may not seem impressive, it's a vast improvement over older designs that rarely saw better than 2 to 3 MPG. For comparison's sake, most modern trucks manage between 5.5 and 6.5 mpg. For most long-haul truck drivers, an increase in fuel economy of 54 percent would equate to a savings of around $25,000 per year at current diesel prices. The SuperTruck uses lightweight materials, an efficient engine and aerodynamic improvements to net its fuel economy increase.
http://www.greencarreports.com/news/1083123_how-to-make-a-semi-much-more-efficient-cummins-supertruck http://www.caranddriver.com/features/how-automakers-will-meet-2016-cafe-standards http://www.autoblog.com/2013/03/20/supertruck-semi-achieves-54-percent-increase-in-fuel-economy/ http://www.carsdirect.com/car-buying/best-diesel-gas-mileage-cars-and-trucks http://www.ehow.com/facts_5844120_fuel-mileage-information-semi-trucks.html http://www.autoblog.com/2013/03/20/supertruck-semi-achieves-54-percent-increase-in-fuel-economy/
mpg of modern trucks