The redesigned 2011 Sienna premiered at the Los Angeles Auto Show in early December 2009.
It was designed at Calty studios and engineered at Toyota Technical Center in Ann Arbor, Michigan and Toyota Motor Corporation in Japan.
The new Sienna arrived at dealers in February 2010.
In November 2011, it was exported to South Korea, making it the first U.S.- built Toyota sold in Korea.

The Sienna is offered in five trim levels, the Sienna base grade, LE, XLE, Limited and for the first time the SE trim.
The new SE offers revised bodywork, clear tail lamps, 19-inch (480 mm) wheels, firmer suspension and revised steering tuning for a sportier ride.
All-wheel-drive is only available with the V6 engine on the LE, XLE and Limited model trims.
Described by AOL Autos as slipping a sports car in a minivan, Chief Engineer Kazuo Mori (an avid autocrosser) reportedly had to overcome opposition to get the SE equipment package included in the line-up.

The previous 3.5-liter 2GR-FE continues, but for the first time the Sienna offers a four cylinder engine, the 1AR-FE; and is the first time Toyota has offered a four-cylinder engine in a North American minivan since discontinuation of the Estima/Previa in late 1997.
An Electric Power Steering (EPS) system replaces the previous hydraulic power steering system.
Toyota continues to offer all wheel drive in the Sienna.
As GM discontinued its AWD minivans after the 2006 model year, it is the only North American minivan with an available AWD drivetrain until the 2021 Chrysler Pacifica goes on sale in late 2020.
Toyota expects EPA-estimated mileage figures of 19 mpg‑US (12.4 L/100 km) city / 24 mpg‑US (9.8 L/100 km) highway for models powered by the 4-cylinder engine, 18 mpg‑US (13.1 L/100 km) city / 24 mpg‑US (9.8 L/100 km) highway for 2WD V6 models, and 16 mpg‑US (14.7 L/100 km) city / 22 mpg‑US (10.7 L/100 km) highway for AWD models.
An optional tow package for V6 models is rated to tow 3,500 pounds (1,600 kg).

The front dashboard features a "swoop" wood trim, inspired by the Toyota Venza and Lexus RX, that gives front seat occupants a "60/60" split whether in the driver or passenger seat.

New features include an optional sliding second row with "Lounge Seating" recliner style chairs, a feature previously seen on the Lexus LS, and Toyota's keyless Smart Key System with push-button start.
The rear seat entertainment option now uses a 16.4-inch (41.7 cm) LCD screen which operates in two view modes, a single 16:9-ratio widescreen or two separate 4:3-ratio split screens with separate wireless headphones.

For safety the back-up camera comes with a new 180° panoramic view.
Other new options include a Pre-Collision System (PCS) as well as an automatic highbeam dimmer, Safety Connect and a more advanced stability control system known as Vehicle Integrated Dynamics Management.
A driver's knee airbag is now standard as well.

When the second row seats are removed, the bottom of the second row seats, which is similar to a rack, remains attached to the van floor.
This means that with second row seats removed, the floor is not flat.

Toyota is the first automaker to offer a factory installed auto-access seat for disabled people.
The one-touch rotating, power ascending/descending lift-up seat can lower to within 19 inches (48 cm) of the ground.
The redesigned 2011 Sienna premiered at the Los Angeles Auto Show in early December 2009. It was designed at Calty studios and engineered at Toyota Technical Center in Ann Arbor, Michigan and Toyota Motor Corporation in Japan. The new Sienna arrived at dealers in February 2010. In November 2011, it was exported to South Korea, making it the first U.S.- built Toyota sold in Korea.
The Sienna is offered in five trim levels, the Sienna base grade, LE, XLE, Limited and for the first time the SE trim. The new SE offers revised bodywork, clear tail lamps, 19-inch (480 mm) wheels, firmer suspension and revised steering tuning for a sportier ride. All-wheel-drive is only available with the V6 engine on the LE, XLE and Limited model trims. Described by AOL Autos as slipping a sports car in a minivan, Chief Engineer Kazuo Mori (an avid autocrosser) reportedly had to overcome opposition to get the SE equipment package included in the line-up.
The previous 3.5-liter 2GR-FE continues, but for the first time the Sienna offers a four cylinder engine, the 1AR-FE; and is the first time Toyota has offered a four-cylinder engine in a North American minivan since discontinuation of the Estima/Previa in late 1997. An Electric Power Steering (EPS) system replaces the previous hydraulic power steering system. Toyota continues to offer all wheel drive in the Sienna. As GM discontinued its AWD minivans after the 2006 model year, it is the only North American minivan with an available AWD drivetrain until the 2021 Chrysler Pacifica goes on sale in late 2020. Toyota expects EPA-estimated mileage figures of 19 mpg‑US (12.4 L/100 km) city / 24 mpg‑US (9.8 L/100 km) highway for models powered by the 4-cylinder engine, 18 mpg‑US (13.1 L/100 km) city / 24 mpg‑US (9.8 L/100 km) highway for 2WD V6 models, and 16 mpg‑US (14.7 L/100 km) city / 22 mpg‑US (10.7 L/100 km) highway for AWD models. An optional tow package for V6 models is rated to tow 3,500 pounds (1,600 kg).
The front dashboard features a "swoop" wood trim, inspired by the Toyota Venza and Lexus RX, that gives front seat occupants a "60/60" split whether in the driver or passenger seat.
New features include an optional sliding second row with "Lounge Seating" recliner style chairs, a feature previously seen on the Lexus LS, and Toyota's keyless Smart Key System with push-button start. The rear seat entertainment option now uses a 16.4-inch (41.7 cm) LCD screen which operates in two view modes, a single 16:9-ratio widescreen or two separate 4:3-ratio split screens with separate wireless headphones.
For safety the back-up camera comes with a new 180° panoramic view. Other new options include a Pre-Collision System (PCS) as well as an automatic highbeam dimmer, Safety Connect and a more advanced stability control system known as Vehicle Integrated Dynamics Management. A driver's knee airbag is now standard as well.
When the second row seats are removed, the bottom of the second row seats, which is similar to a rack, remains attached to the van floor. This means that with second row seats removed, the floor is not flat.
Toyota is the first automaker to offer a factory installed auto-access seat for disabled people. The one-touch rotating, power ascending/descending lift-up seat can lower to within 19 inches (48 cm) of the ground.
Toyota Sienna