The list of changes to the Sienna for 2014 includes only a few minor adjustments. Toyota decided to nix the 2.7L four-cylinder that used to come in the entry-level version of its minivan. Instead, all versions now have a 3.5L V6. Several configurations are still possible, however, including the basic version, LE, SE and XLE, to which buyers can add the eight-passenger and all-wheel drive options.