The all new 2010 Buick LaCrosse comes in 3 different trims, which are the CX, CXL, and CXS trim levels.  The 2010 Buick LaCrosse CX and CXL models come with two different engine options.  The first engine option for the CX and CXL models is 2.4 liter 4 cylinder engine which produces 182 horsepower.  The second option for the CX and CXL trims is an upgraded engine which boasts a 3.0 liter V6 engine which produces and impressive 255 horsepower.  Both trims come with a six speed automatic transmission.
 
For those looking for even more pickup, the 2010 Buick Lacrosse CXS is the way to go.  The CXS trim comes with a 3.6 liter V6 engine which produces 280 horsepower.  Like the CX and CXL trims, the CXS comes with a 6 speed automatic transmission.
 
The engine options for all three trims of the 2010 Buick LaCrosse are different than the 2009 options.  The 2009 CX and CXL models came standard with a slightly more powerful engine that had a 3.8 liter V6 engine which produced 200 horsepower.  The 2010 CXS replaced the Buick LaCrosse Super trim which had a 5.3 liter V8 engine that produced 325 horsepower. 
 
While the engine options for the 2010 Buick LaCrosse are less powerful than the 2009 model, overall fuel efficiency has increased and the Buick LaCrosse is an industry leader in many categories.  The 2010 Buick LaCrosse compares better to the typical large sedan in acceleration, fuel economy, ride quality, and quietness.  Overall, the 2010 Buick LaCrosse is considered the best value in its class. The 2010 Buick LaCrosse compares better to the typical large sedan in acceleration, fuel economy, ride quality, and quietness.  Overall, the 2010 Buick LaCrosse is considered the best value in its class.

Ronnie writes extensively about Buick LaCrosse Engine and other related topics.