When it comes to the minivan segment, the Sienna stands above most competitors. Reviewers far and wide compliment the vehicle for its interior space, comfort, safety features, fuel efficiency and flexibility. This is a people- and equipment-hauler at its finest. The third row seat can fold flat and the second row seat can be removed to create 150 cubic feet for cargo. Sienna owners love the minivan for more than its functionality. It has a stylish low front grille that tapers into the roofline. There's also newly designed headlights and taillights on the latest model. The Sienna is powered by a 3.5 liter 6-cylinder engine with 266 horses. It is the only minivan on the market available with all-wheel drive.