2012 Buick LaCrosse Gets Slight Boost from Updated V-6 Engine

By Trevor Dorchies | June 22, 2011
The 2012 Buick LaCrosse will arrive later this summer, and it’s coming with updated options under the hood. Buick has officially announced that a revised version of GM’s direct-injected 3.6L V-6 engine will be offered in the 2012 model as an alternative to the recently announced 2.4L four-cylinder with the eAssist mild hybrid system.
The updated V-6 is rated at an SAE-certified 303 horsepower V-6 (an increase of 23 ponies) and 264 pound-feet torque. Intake valves in the heads are bigger and work with a new camshaft to help boost horsepower. Fuel efficiency has not been compromised as the LaCrosse is expected to get 17 mpg city and 27 mpg highway, thanks in part to a new fuel pump and isolated fuel rail. The V-6 will also be expected to push an all-wheel drive version of the LaCrosse that’s expected soon.
“The changes we’ve made to the 3.6L V-6 represent greater refinements to an already well-balanced package,” said Tom Sutter, global V-6 chief engineer said in a statement released by Buick. “We are using the latest designs, lighter-weight components and enhancements to improve the engine’s performance, efficiency and durability.” The V-6 sheds about 20 pounds thanks to a new integrated cylinder head/exhaust manifold and composite intake manifold, updated connecting rods and a light-weight structural front cover. These additions by subtraction also aid efficiency and help to further balance the Lacrosse’s ride. With the official announcement of the updated V-6 and the eAssist boosted four, the 2012 Buick LaCrosse line-up continues to make strides toward becoming an even more attractive player in the midsize sedan segment. Are the engine updates enough for you to consider a new 2012 LaCrosse?