Having had the 2 WD version of the 4 cyl 5 speed and a 6 cyl 6 speed. The mileage difference is at most 2 MPG and even empty, driving the 4 CYL in any hills is a royal pain. Down into 3rd gear a lot and really gutless. It works, but just. Adding the extra to the drive train would likely drag the mileage down more and I would not expect it to have the torque to get over much. The first gen being smaller is fine with the 4 CYL, but I really do not think it has the power needed for the weight of the 2nd gen without doing performance mods.
No Gen 2s, but there were some Gen 1 4x4 4-cyl variants.
I have a gen 1 2X KC (2000) 4 banger automatic
It was so gutless I had to floor it just to get up to highway speeds and not get run over
My 4x2 experiences:
Gen 1: 4 cyl 5-sp = 21-22 mpg // max 26 mpg Adequate/borderline wimpy power.
Gen 2: V6 6-sp = 17-18 mpg // max 21.7 mpg Power/torque galore. Easily worth the extra cost in fuel.
Do not expect a better gas mileage at all. More energy output means lower mpg so if you are not going to use the 4x4 that often, I would not go with it. ::wink::I was wondering if Nissan ever offered the Gen 2 King Cab in a 4 cyl 4x4 version? I don't do any towing and would like a little better gas mileage. Would consider manual trans 4cyl 4x4 downsize from my current CC SE 4x4.
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