The new model has been shown in four-door saloon and five-door hatchback variants, but only the hatchback is expected to reach the UK.
The Impreza is underpinned by an all-new structure, called Global Platform, which will be used for all future Subarus, including a new WRX STi, which is tipped to be a four-wheel-drive performance hybrid.
The new Impreza saloon and hatchback will be larger than before, with both wheelbases extended by 25mm over the outgoing model. Overall length is up by 41mm and width by 38mm. Height has been reduced by 10mm for a sportier look and better aerodynamics.