Citroën has released first details and photos of the redesigned C segment C4 ahead of its September Paris show debut.

Styling is more conservative than the current model and the new car is 5cm longer, 2cm wider and 3cm taller with the 408-litre boot claimed to be the biggest in its class.

Drivers will be able to adjust the colour of the instrument display, select their own ‘polyphonic’ sound alerts and finely adjust the intensity of the air conditioning and some models will have a new massage function on the front seats.

EGS (electronic gearbox system), hill start assist, automatic electric parking brake, lane departure warning system and xenon dual-function directional headlamps will be carried over from the current line and joined by a new blind-spot monitoring system, a cornering light function, cruise control and speed-limiter with road speed memory settings and a new service called eTouch that offers on-board emergency assistance, enables drivers to monitor their driving patterns and fuel consumption, and receive advice on how to improve their fuel economy, and also allows drivers to consult their vehicle’s technical status and monitor any necessary maintenance or servicing requirements.

Available powertrains will include new micro-hybrid e-HDi units with stop & start.

The C4 will be produced at Mulhouse in France.