The all-new Citroen C4 Grand Picasso has been officially unveiled, promising more interior space, greater efficiency and a host of new technology features.

A larger version of the recently revealed C4 Picasso five-seat MPV, the second-generation C4 Grand Picasso people-mover exhibits revised exterior styling and a more versatile cabin with two flat-folding seats in the third row.

At 4590mm long, 1830mm wide and 1630mm tall, the new Citroen C4 Grand Picasso is almost identical in size to the first-generation model, though its wheelbase has grown a substantial 110mm to 2840mm, which the French brand claims is the longest in its class.

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Citroen says the new C4 Grand Picasso has the most spacious second and third seating rows in its segment, as well as the most accessible third row, the longest second-row seat adjustment travel, and the widest boot in its class. With the third row folded flat, the boot now has a capacity of 645 litres (up 69L from the original), which expands beyond 700L with the second row slid forwards.

The introduction of the new Efficient Modular Platform 2 (EMP2) sees the C4 Grand Picasso’s weight reduced up to 110kg compared with its predecessor, with aluminium used in the floor and bonnet and the tailgate made from a composite material.

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Other diesel engines available include the 85kW e-HDi that uses 4.0L/100km combined and the more powerful 110kW BlueHDi that uses 4.4L/100km when paired with the six-speed automatic transmission.

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The redesigned interior features two digital displays – a seven-inch touchpad and a high-definition 12-inch panoramic screen – the former responsible for controlling in-car functions like air conditioning, audio and navigation, and the latter for displaying essential driving information, navigation data and other driving aids.

Other technology highlights include radar-based adaptive cruise control; collision warning, lane departure and blind spot monitoring systems; auto high-beam; 360 Vision camera display; and automatic reverse parking.