The 2021 Buick Envision Preferred is equipped with lane keeping assist, check rear seat reminder, vibrating driver seat pre-collision warning system, audible warning pre-collision warning system, visual warning pre-collision warning system, sensor/alert blind spot safety, rear cross traffic alert, lane deviation sensors, driver knee airbags, rearview camera system, side camera system, front side airbags, rear side curtain airbags, front side curtain airbags, rear parking sensors, 4-wheel abs, emergency braking preparation, anti-lockout power door locks, auto-locking power door locks, programmable safety key, hill descent off-road driving assist, auto off electronic parking brake, alarm anti-theft system, braking assist, disc rear brake, ventilated disc front brake, dual front airbags, vehicle immobilizer anti-theft system, power brakes, latch system child seat anchors, electronic brakeforce distribution, stability control, traction control, in dash rearview monitor, occupant sensing passenger airbag deactivation, front seatbelt pretensioners, front seatbelt force limiters, front emergency locking retractors, rear emergency locking retractors, front seatbelt warning sensor.