The 2021 BMW 4 Series 430i is equipped with front pedestrian automatic emergency braking, front automatic emergency braking, driver attention alert system, vibrating steering wheel pre-collision warning system, audible warning pre-collision warning system, visual warning pre-collision warning system, sensor/alert blind spot safety, dual front knee airbags, lane deviation sensors, traffic sign recognition, rollover protection system, rearview camera system, head protection chambers side airbags, front side airbags, front parking sensors, rear parking sensors, regenerative braking system, 4-wheel abs, emergency braking preparation, cornering brake control, auto-locking power door locks, brake drying, auto off electronic parking brake, ventilated disc rear brake, alarm anti-theft system, braking assist, hill holder control, 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, post-collision safety system impact sensor, alert system impact sensor, battery disconnect impact sensor, door unlock impact sensor, rear emergency locking retractors, front seatbelt warning sensor, fuel cut-off impact sensor.