The 2011 Buick LaCrosse was offered with two gasoline V6 engines: a 3.0-liter V6 and an optional 3.6-liter V6, both paired with a six-speed automatic transmission.
For buyers selecting the LaCrosse in 2011, the choice of engine determined performance and refinement: the base 3.0L V6 emphasized smoother cruising and efficiency, while the 3.6L offered stronger acceleration and higher power, matching Buick’s luxury emphasis.
Engine options
The LaCrosse lineup for 2011 included two gasoline V6 engines, with the 6-speed automatic transmission standard across trims.
- 3.0-liter V6 — roughly 255 horsepower and 223 lb-ft of torque; features variable valve timing and direct injection, paired with a six-speed automatic.
- 3.6-liter V6 — roughly 303 horsepower and 264 lb-ft of torque; features variable valve timing, paired with a six-speed automatic.
In practice, the 3.0L is aimed at everyday cruising efficiency, while the 3.6L provides stronger highway power and quicker acceleration for drivers seeking enhanced performance from Buick’s flagship sedan.
Summary
The 2011 Buick LaCrosse offered two gasoline V6 engines: a 3.0-liter V6 and an optional 3.6-liter V6, both mated to a six-speed automatic transmission, delivering a balance of efficiency and performance depending on the chosen configuration.