“The first thing I wanted to find out about the Colorado diesel was how much juice it drinks. Fuel economy of course is one of the most exciting things about diesel pickups. Thanks to the magic and wizardry of physics and combustion, diesel is what makes it possible for an enormous vehicle to have great cargo capacities, godawful aerodynamics, and still get decent gas, er, diesel mileage.
I grabbed a 2WD Colorado with a tonneau cover over the bed to maximize aerodynamics and minimize weight. In my first 25 miles of driving I averaged 25.3 MPG according to the truck’s trip computer. With a featherfoot on the highway, I squeezed out a 33.5 MPG run over another 25 miles with a max of 35.1.
On a 55.1 mile mixed loop, with about 50 percent highway, 40 percent backroad, 10 percent city conditions I ended up at 29.5 MPG. Pretty impressive for a pickup truck that can pass a modern crash test, carry four adults in comfort, and tow just about any toy in your garage no sweat.” -- Andrew P. Collins, Jalopnik