The 200 is bigger for sure and will have more space inside without a doubt but also your 200 is lifted that will make the size difference seem bigger than it actually is.Went to the North Texas Auto Show today and happened upon one of these while parking. Definitely close in size to the 200 but looks slightly smaller in person, at least IMO. Definitely smaller than the 200 inside with interior space being more akin to a 150 or 4Runner. Current 4R has better cargo capacity with second row folded down for sure.
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The 250 is huge externally compared to the older Prados.
The 300 has slightly less space than the 200 inside even though externally they are almost identical for more reasons than one.
They moved the seats more back in the 300 and the body width vs cabin width ratio is also different. Same body width but more of fenders sticking out vs actual cabin space.