The Audi Prologue Avant concept has been revealed ahead of its debut at the Geneva motor show next week.

The company’s successor to the Prologue coupé, which was first seen at the Los Angeles motor show 2014, has been created to show how its latest design language will be applied to future estate models, most notably the next A6 Avant.

The two Prologue concepts share a wide, hexagonal grille, angular matrix laser headlights, prominent air ducts decorated with LED graphics, a contoured bonnet and shapely front wings. However, their similarities end at the trailing edge of the front doors with the Avant receiving an additional set of rear doors, an extended glasshouse, muscular rear wheel arches, a longer roof, more upright pillars, a steeply angled tailgate and tailpipes integrated into the bumper.

At 5110mm in length, 1970mm in width and 1400mm in height, the Prologue Avant is marginally longer, wider and higher than the Prologue coupé. Like its two-door sibling, the new five-door has a 2990mm wheelbase and 22-inch wheels.

The contemporary dashboard and touchscreen controls preview cabin architecture planned for Audi’s future model line-up.

Power for the Prologue Avant comes from a lightly retuned version of the plug-in diesel-electric hybrid system planned for the second-generation Q7. This is Audi’s familiar twin-turbocharged 3.0-litre V6 diesel engine and an electric motor to produce a combined 449bhp, channelled to all four wheels. The Prologue Avant also features what Audi calls “high-end series production chassis technology”. This includes air suspension with adaptive damping and four-wheel steering.