Comparison left vs right for a craftsman who doesnt know which one he should buy:
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l/r same bed size
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r lower bed for way easier loading/unloading
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r less likely to crash
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r less fuel consumption and costs
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r less expensive to repair
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r easy to park
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r easy to get around in narrow places like crowded construction sites or towns
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r not participating in road arms race
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l You get taken serious by your fellow carbrained americans because ““trucks”” are normalized and small handy cars are ridiculed.
So unless you are a fragile piece of human, choose the right one.
The one on the right is probably better at offroading. Some kei trucks are 4x4 and lighter weights and shorter wheelbases are usually a good thing in off road scenarios.
Wheel size plays a large role too
If you really need the ground clearance, you can install a lift kit on the kei truck to accomodate a larger tire diameter. I doubt this would be neccesary unless building a vehicle specialized for off road.