Based on the production 508 saloon, the concept uses a 1.6-litre PureTech 200 petrol engine coupled to a 110bhp electric motor to drive the front axle, while a separate 200bhp electric motor powers the rear.
Peugeot says the concept can hit 62mph in 4.3sec and a mechanically limited top speed of 155mph.
An 11.8kWh battery allows for a range of 31 miles in electric-only mode. When operating as a hybrid, the 508 PSE emits 49g/km of CO2.
Visual changes from the production 508 come in the form of a redesigned front bumper, rear diffuser and aerodynamic-enhancing winglets mounted on the wings.
Design elements such as the carbonfibre door mirrors and air-grabbing front valance hint at the model’s performance aspirations, with the anodised Lion emblem paying tribute to 2018’s e-Legend concept.