Debuting in 2016, the fifth-generation Impreza (GK sedan and GT hatchback) was the inaugural vehicle constructed on the modular Subaru Global Platform (SGP). The architecture yielded a 70% increase in structural body rigidity while improving NVH characteristics. Power came from a revised FB20 2.0-liter direct-injected flat-four producing 152 hp, alongside a 1.6-liter option in select global regions, coupled with Lineartronic CVT and Symmetrical AWD. The engineering setup effectively combined the low center of gravity inherent to the horizontally-opposed engine layout with a rigid chassis frame, delivering precise handling and composure across dry pavement and slippery surfaces alike. Engine bay packaging ensured optimal front-to-rear axle weight distribution alongside efficient thermal cooling under sustained driving loads.

The generation widely incorporated the EyeSight driver-assist system utilizing stereo cameras for active collision avoidance. A 2019 facelift introduced subtle aesthetic revisions to the front fascia and introduced e-Boxer mild-hybrid powertrains combining a 2.0-liter engine with an electric motor. Fifth-generation production concluded in 2023. Designers placed a strong emphasis on cabin ergonomics, occupant visibility, and long-distance driving comfort. Robust mechanical reliability across the drivetrain and suspension components helped establish this generation as a benchmark choice within its competitive market segment worldwide.