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The 2015 Ram 1500 leads pickup truck fuel economy with winning powertrains: exclusive 3.0-liter V-6 EcoDiesel with 240 horsepower and 420 lb.-ft. of torque at 28 miles per gallon (mpg) and Pentastar 3.6-liter V-6 with 305 horsepower and best-in-class gasoline fuel economy of 25 mpg. Ram 1500 holds the top two spots in half-ton truck fuel economy, even beating small trucks. The 3.0-liter EcoDiesel engine is mated to the TorqueFlite eight-speed automatic transmission. Together, the powertrain...Read.