The Sienna comes in several different trims, with two available second-row seat configurations to provide room for seven, or eight passengers. The third row of seats fold into the floor to provide more storage space when needed. A 266-hp 3.5-liter V6 and five-speed automatic transmission provide enough forward momentum to satisfy any driver. Safety features include side curtain airbags for all three rows of seats, side airbags for the front seats, front airbags, and anti-lock brakes.