A carry-over from 2006, the Sienna is a four-door up-to-eight-passenger family mini-van. What’s new for 2007 is a 3.5-liter V6 engine that now produces 266 horsepower linked to a five-speed automatic transmission. The Sienna is available in CE, LE, XLE and Limited trim levels, with all but the CE offered in all-wheel-drive (in addition to front-wheel-drive).