There are seven Sienna models available this year, differentiated in price from the base CE to  the top shelf XLE Limited by over $10,000.  The Sienna CE is the entry level offering for Toyota's popular minivan.  For 2007, the SIenna gains a more powerful engine, and additional amenities like a CD changer and satellite radio capability.
The Sienna is powered by a 3.5 liter V-6, supported by Toyota's Variable Valve Timing + intelligence system, and mated to a five speed electronically controlled automatic transmission.  For years, the VVT-i technology has been employed to increase engine power, lower emissions, and improve fuel economy.  The 266 horsepower Sienna will pull 3500 pounds, and all models are fitted with a special towing preparation kit.  Drivers can expect 19 mpg fuel economy in the city and 25 mpg on the highway.
The base Sienna is well-equiped with Toyota's advanced safety features.  ABS with Electronic Brake-force Distribution and Brake Assist is standard, as is the Advanced Airbag System with front seat-side and side-curtain airbags.  Vehicle Stability Control is optional on all models, but AWD is not available with the CE.