My 99 3.3L Caravan used to regularly get 25 mpg, just hypermiling with no mods. I traded it for a 20053.8L Town and Country, and with the stow-and-go seats removed and replaced with a 1/2" ply false floor, no other mods just hypermiling, I would consistently get 28 mpg and my peak was a tank at 30.9 mpg.
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