The guys over at Fourwheeler.com got their hands on a 2014 RAM 1500 Diesel (Laramie Long Horn 4x4), hooked it up to a trailer, loaded it up to near max towing capacity, and took her for a spin. While some 2WD versions of the Ram 1500 Diesel are rated to tow up to 9,200 pounds, the Laramie Long Horn 4x4 is rated to tow 7,300 pounds. Rather than a boring flat ground review they decided to push the 3.0L Diesel into some knarly grades exposing it to an impressive 11,000 foot elevation changes. The highlights include quiet operation and plenty of power. John Cappa, Editor in Chief of Fourwheeler, said:
If you are wondering about fuel economy under max towing capacity and unloaded you will come away very pleased with their results. Remember folks, they tested under some pretty nasty grades:The first thing we noticed is how quiet the 3.0L EcoDiesel is. It's a pleasure to tow with. It’s far more relaxing to drive than the rumbling and sometimes guttural Hemi V-8 gas engine, which has an appeal all its own. Our 3.0L backed with the eight-speed transmission and 3.55 axle gears was always able to maintain a minimum of 55-60 mph on our brutal test route. While ascending the steepest areas on the route, which included the 6 percent grade of the Grapevine, we had our foot to the floor and the V-6 was spinning at 4,000 rpm for several minutes in order to maintain 55 mph. On less steep sections the little diesel quietly motored along between 2,000 and 3,000 rpm, and still had enough reserve power to make passes.
There you have it folks. A fully loaded out 2014 RAM 1500 Diesel Laramie Long Horn 4x4 --that's a mouth full-- pulls some very impressive numbers (no pun intended)During our harsh max-capacity towing lap we were able to drag the 3.0L’s fuel economy down to a respectable 13.8 mpg. We say respectable because many 1/2- and 3/4-ton gas trucks have trouble mustering even double digit mpg on this section of highway at full towing load. With the trailer unhitched, it’s easy to take the EcoDiesel’s fuel economy into the the high 20s. The 3.0L diesel in our Ram purred at 1,900 rpm at 75 mph. On a 440-mile highway, mountain, desert, and Los Angeles traffic infused trip we managed to reach 26.1 mpg without much effort. This kind of mpg performance gives our EcoDiesel Ram about a 700-mile range between fuel stops when unloaded. We're sure that frugal hyper-milers could do far better than us and easily reach 30 mpg or better with an unloaded truck on mostly flat highway commutes.
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