The 2011 Buick LaCrosse has been on sale for a while now but the big sedan has only now earned the National Highway Traffic Safety Administration's five-star rating in the agency's latest round of testing. The latest results include top scores for both the driver and passenger in front and side crash tests, as well as for rollover performance.

Key to the LaCrosse’s prowess in the tests is its full array of standard safety equipment. These include front- and side-impact air bags as well as roof-mounted head-curtain air bags that help protect occupants in the event of a rollover crash.

There are also blind zone alert technologies, a backup camera with a display integrated into the navigation screen and an advanced front-seat safety belt system. This latter feature includes a dynamic locking latchplate and dual pretensioners. The latchplate locks during a crash to help securely restrain the occupant’s pelvis, and it works in concert with the safety belt load limiting feature to control loads on the occupant’s upper torso.

Finally, the LaCrosse is also fitted with GM’s StabiliTrak traction and stability control systems as well as OnStar telematics and connectivity, which is free for the first year of ownership.

For full details on the 2011 Buick LaCrosse, click here.