So the changes are mostly on the exterior?

Not quite, one of the key improvements on new 2010 Toyota Camry is its upgraded 2.5-liter four-cylinder engine. It gets a boost in horsepower over the old 2.4-liter (pictured) to 169 horsepower, and for the first time a six-speed automatic transmission will also be available with the four-cylinder, which will likely result in improved gas mileage and refinement. The current 3.5-liter V6 engine will carry over for 2010.

Photo Courtesy of: Toyota