The redesigned Kia Carnival has a hybrid option with an expected 36 mpg range Standard as a hybrid, the Toyota Sienna gets 36 mpg or 35 mpg with all-wheel drive The Chrysler Pacifica is the only plug-in hybrid minivan, with a 32-mile electric range. The number of minivans on sale in the U.S. has shrunk, but the remaining cohort is on the whole…