Models also known as Trim Levels, are used to identify a vehicle's level of equipment or special features.
The 2018 Buick LaCrosse has an average owner rating of 4.46 out of 5 which ranks it #7 of 7 other Large Cars.
From the Vehicle History blog
Overall
Front
Rollover
Side
Moderate Overlap Front
Side
Roof Strength
Driver-side Overlap Front