Which pickup trumps the rest at the pump?

A common question we see here at Cars.com has to do with fuel efficiency. Lately, truck buyers — the ones who actually need to buy a full-size pickup — have been more curious about which one gets the best fuel economy. Our research staff at Ask.cars.com got on the case and delivers a full list, using 2007 EPA estimates, of V-6- and V-8-powered full-size pickups. Check out which truck bests the rest in this category.

What truck gets the best mileage? (Ask.cars.com)