The all-new Citroën C4 Picasso might not look as elegant as the current version, but thanks to innovative construction techniques and updated engines it promises more interior space plus better efficiency.

Based on PSA’s EMP2 platform (which will also underpin future Peugeot 3008 and Vauxhall / Opel Zafira models), the 2014 C4 Picasso measures 4.43 m (14’ 6”) long. That’s actually slightly shorter than its predecessor, however a stretched wheelbase, wider track and lower floor mean extra cabin room.

2014 Citroën C4 Picasso. Scroll down for more images.

Perhaps just as importantly, the kerb weight has dropped by 140 kg (308 lbs). Such a significant reduction has been made possible by the use of aluminium in the body structure and bonnet, while the tailgate and rear floor are made from composites.

Consequently, the new C4 Picasso is as light as the smaller C3 Picasso. Together with enhanced aerodynamics, electric power steering, retuned engines and the standard fitment of stop-start on most variants, the result is an average 30 g/km fall in carbon dioxide emissions.

In terms of fuel economy, star of the range is going to be the e-HDi 90 Airdream engine mated to a new six-speed clutchless gearbox. That particular arrangement achieves a combined 74 mpg (3.8 l/100km), with CO2 emissions of just 98g/km.

One thing that could divide opinion is the styling. Although the front and rear ends work well, the side view is an odd collection of lines, bulges and a clumsy chrome ‘C’ motif around the windows.

Of course appearances might not be a huge concern to many potential buyers, especially as Citroën is planning a comprehensive equipment list. Among the items available will be a park assist function, radar-controlled active cruise control, ultrasonic blind spot monitoring, a motorised tailgate and 360 Vision which uses four cameras to produce an all-round bird’s eye view.

Sales of the 2014 Citroën C4 Picasso begin this summer.