Based on a modified version of Camry platform, the new Sienna is expected to grow a few inches in length for improved passenger room and increased cargo capacity.

Toyota has announced plans to introduce the redesigned 2011 Sienna minivan at the Los Angeles Auto Show.

While details are limited, our spies have previously caught the model undergoing hot weather testing in the American desert. Unfortunately, the styling differences appear so subtle that it's virtually impossible to determine what will differentiate the 2011 model from the 2010 version.

Based on a modified version of Camry platform, the new Sienna is expected to grow a few inches in length for improved passenger room and increased cargo capacity. The Camry underpinnings also mean the minivan will likely be powered by a 3.5-liter V6, with 268 hp and 246 lb-ft of torque, and possibly a hybridized 2.4-liter four-cylinder with 147 hp and 138 lb-ft of torque.

Look for more information to be released when the model is officially unveiled in December.

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2011 Toyota Sienna Third Generation Minivan World Debut in L.A.