LaCrosse models come in four trims: Base, Preferred, Essence and Premium. All are powered by a 2.5L 4-cylinder 'light' hybrid engine or the available direct-injection 3.6L V6 with variable valve timing and cylinder deactivation. The new-for-2018 2.5L 'eAssist' 4-cylinder gets 25 mpg city and 35 highway, making 194 HP and 187 pound-feet of torque. It comes paired to a 6-speed automatic transmission. The V6 unit makes 310 horsepower and 282 pound-feet of torque while both benefit from stop/start technology and a 9-speed transmission to maximize fuel economy. Both Premium and Essence are available with Buick's twin-clutch all-wheel-drive system, which constantly monitors traction and adjusts traction as necessary.
Being the luxury brand that it is, even the base LaCrosse is well-equipped. Standard exterior features include 18-inch alloy wheels, active front lower grille shutters to aid aerodynamics, automatic xenon HID headlights with LED accents and heated power mirrors with LED turn indicators. Inside, the LaCrosse benefits from Buick's QuietTuning, which helps reduce and absorb noise and vibration thanks to advanced acoustic materials. Coupled with active noise cancellation, the LaCrosse is able to provide a very quiet ride. Interior amenities include keyless entry and push-button start, auto up/down windows, automatic dual-zone climate control, leatherette seating with 8-way powered front seats, a 60/40 split-fold rear seat, and Buick IntelliLink, which includes an 8-inch touchscreen control, Apple Car Play and Android Auto smartphone integration, dual USB ports and Bluetooth streaming audio. Cruise control and OnStar with 4G LTE and built-in WiFi hotspot are also standard.
The LaCrosse Preferred adds different 18-inch wheels, power tilt/telescopic steering and SiriusXM satellite radio to the mix. With the LaCrosse Essence, you get leather seating with heated front seats and driver's side memory settings, an auto-dimming rearview mirror and articulating headlights. Finally, the LaCrosse Premium brings a heated steering wheel, 4-way lumbar massaging front seats and head-up display. Advanced safety features bundled in the Driver Confidence Package include a forward collision alert, lane-keep assist with lane departure warning, side blind-spot alert and rear cross-traffic alert.
Standalone options on the Essence and Premium trims include a Bose premium sound system, continuously variable damping, rear power sunshade, navigation and a panoramic moonroof.
Bundled in the Driver Confidence Package #2 is automatic park assist, front pedestrian detection, automatic braking and adaptive cruise control. The Sights and Sounds Package includes Buick's IntelliLink radio with navigation and Bose surround sound, while the Sun and Shade Package adds the moonroof and rear sunshade.