The third generation of the Sienna is already for sale, offering an updated and more dynamic design. This minivan’s 187-hp 2.7-litre four-cylinder engine is back, but most trim levels get a 266-hp 3.5-litre V6. Both engines are assisted with a six-speed automatic transmission. Several Sienna models can seat seven or eight people, including the sporty SE and the LE and Limited with AWD. The Sienna is the only minivan that offers AWD.