Ideal for families who need the space for up to eight passengers, Toyota's Sienna minivan promotes a high level of practicality and comfort. The Toyota Sienna minivan is given an extensive powertrain enhancement for the 2017 model year. A more potent 3.5-liter V-6 engine presents a noticeable improvement over the 2016 powerplant. Generating 296 horsepower and 263 pound-feet of torque, the new Toyota engine achieves greater power while obtaining better fuel economy rated at 23 miles per gallon in combined city and highway driving. An all-new eight-speed automatic transmission also receives credit for the 2017 Toyota Sienna's performance that continues to be one of the only minivans available with all-wheel drive. Standard equipped with eight airbags and Toyota Star Safety System consisting of features such as Vehicle Stability Control, passengers of the 2017 Sienna can ride with extra confidence.