A matress will not fit inside a Toyota Sienna. The interior space iS33.5 ft, 101 ft with a seat area, which is not wide enough. If You pull the inner panels off it may fit, but it will still be close.
min
May 4, 2021
We fit one in just fine, put down the back seats and put it inbetween the middle seats, standing on end
Leo L.
April 10, 2020
A twin mattress will not fit inside a toyota sienna unless the inside panels are removed.
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