the VR6 ?
that was technically an off set inline V6 to save space
(almost like a different spin on a slant 6)
in a true V, there are 2 cylinders opposing themselves (offset by just the width of the rods)
in the VR engines, the cylinders are offset so they fit closes together
this creates a 6 cylinder engine that is narrower then a V6 (though longer) and shorter then an inline 6 (though longer)
i think the main reason was to fit an 6 cylinder into an engine bay designed for a 4 banger...pretty lofty goal, if you ask me
(pic stolen from wiki, which is why it compares an inline 4, instead of an inline 6)
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