I have been trying to find the answer to this for a long time. The best is the Volkwagon caddy from the early to mid 80's 45 mpg.
As far as full size trucks go the Dodge cummins manual transmission, single cab short bed seems to be the best.
Considering that a diesel pickup truck can't use gas I would say that there aren't any diesel trucks that get good gas mileage. If you were wondering which diesel truck gets the highest miles per gallon then I would say you should look at the Dodge Cummins diesel.
No one truck, no one answer. It will depend on the fuel mileage for the truck in question.
diesel.
The best gas mileage truck is the 2011 Ford F150's which get 23 MPG on the highway with the V6 engine.
Right now the pickup truck that is getting the best gas mileage is the Chevy Silverado Hybrid. Because it is a hybrid, it uses technologies that help it burn less fuel.
A truck gets about 20 mpg.
The avgerage gas mileage is around 15 to 17 miles. However, you can save miles with less load in the back of the truck. You r gas mileage depends a great deal on your driving habits so the range can be broad. On average a ford f250 diesel gets between 10-18 mpg.
Well this would depend on what size of pick up truck you are referring to but the top ten best gas mileage pick up trucks of 2011 list the Dodge Ram 1500 as most fuel efficient.
An aerodynamic cab one, like a Freightliner Cascadia, International ProStar or Volvo VN680.
The 2010 diesel will not get good mileage. 14-16 on the highway and 10-12 around town. The gas (I assume your talking v10) will get you about 9-10 around town and 13-15 on the highway. If you want better mileage I would go for a 2011. The new 6.7 diesel gets much better mileage (up to 20+ on the highway in some cases)
The brand is not really the issue.Basically any truck that is aerodynamic will get good fuel mileage. but for really big tractor trailors i would say the international lonestar. but if you want a smaller truck i think Chevy kodiak 7500
i would check out one of fords models, the f 150 gets like 21 mpg? and its very cheap but performs well they're are a good car/truck manufacture