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INNOVATIONS FOR ON-BOARD COMFORT AND

RELAXED DRIVING

The interior of the C4 boasts a host of innovations in driving ergonomics, life on-board and functional convenience. In addition, the C4 is also available with an array of high-tech communication equipment.

 

DRIVING ERGONOMICS

The C4 features a dashboard of clean design lines with a fixed-centred controls steering wheel that places driving aids within easy reach of the driver. At the same time, some of the instruments are positioned in the centre of the dashboard so that the passengers can contribute to the ride.

With the C4, onboard comfort means safety and well-being. 

The multifunctional fixed-centred controls steering wheel

The fixed centre of the steering wheel features the main comfort functions and driving aids. This layout places the emphasis on ergonomics and easy use, thus promoting driving pleasure. 

Easy operation

The main characteristic of the C4 steering wheel is its fixed hub. The centre of the wheel no longer turns with the rim. The technical principle is simple: a toothed ring linked to the steering wheel engages an inner pinion, itself linked to the steering column. The space between the ring and the pinion is used to couple the fixed components: the steering wheel hub and the steering column mounting. 

A host of advantages

The multifunctional fixed-centred controls steering wheel offers the following advantages: 

  • controls are grouped in the centre of the steering wheel, thus freeing up space on the dashboard, and giving it a simpler, uncluttered look;
  • significant improvements in ergonomics, since the controls are grouped in a stable and easily accessible position, so that the driver does not have to take his hands off the wheel;
  • as the controls are on the steering wheel, they remain easily visible, even at night, thanks to the use of illuminated pictograms;
  • in terms of safety, the fixed-centre design of the steering wheel makes it possible to install a shape-optimised driver airbag for improved driver protection.

 Balanced distribution of controls

The controls are split into four different areas, each with four buttons and a knob: 

  • the top right-hand area groups the radio controls, with volume and station settings, the memorised station search function, and the mute function;
  • the bottom right-hand area provides access to the multifunction screen, with – in particular – the on-board computer and the NaviDrive navigation system;
  • the top left-hand area is dedicated to the speed limiter and cruise control. If the driver opts for one of these driving aids, a pictogram will appear on the translucent instrument cluster, showing the mode selected and the programmed speed;
  • the bottom left-hand area groups the controls for vehicle options. For example, the voice control of the NaviDrive navigation system, the telephone controls, the driver-configured button offering “black panel” lighting as the default function, or the air recycling function.

The horn is on the lower part of the steering wheel. Conventional driving functions (lighting and wiping) maintain their usual layout, with standard stalk switches. 

Driver-dedicated steering-wheel display

Driving information intended specifically for the driver is displayed immediately in front of him. This is the case, for example, of the rev counter, the indicator and headlamp settings, and the mode/gear speed selected on versions equipped with an automatic gearbox. 

The background of the rev counter turns red to show that the engine has reached its maximum speed. 

Fitted on the steering column, this display unit moves with the steering wheel to remain easily legible at all times. 

A dashboard designed to promote relaxed driving and shared information 

The clean, soft lines of the dashboard create an uncluttered look that is relaxing on the eye. Enhancing this effect, curves and relief are kept to a minimum. The choice of colours and materials reflects the same approach to design. 

The dashboard is designed to share information, in the same way as on a people-carrier. The centre features three display units:

  • a translucent instrument cluster,
  • a multifunction screen with the on-board computer and NaviDrive navigation system,
  • an air-conditioning display unit for vehicles equipped with automatic air conditioning.

The central translucent instrument cluster 

The instrument cluster displays information on a translucent strip located in the centre of the dashboard. 

Clear information

The translucent instrument cluster provides the following information:

  • vehicle speed,
  • petrol gauge and range,
  • water temperature
  • total and partial mileage,
  • information on the oil level,
  • speed settings for the cruise control and speed limiter,
  • maintenance indicator.

Indicators corresponding to the child safety function, the seatbelt warning lights for the five seats, and ESP disablement are displayed on either side of the translucent instrument cluster. 

Perfect legibility

As the instrument cluster is located in the centre of the dashboard, the translucent strip captures the light perfectly. As the display contrast adjusts instantly to the light, legibility is perfect in all circumstances, by day and night, in full sunlight or in darkness.

 

LIFE ON BOARD

The cabin of the C4 is designed to optimise passenger comfort. The cabin layout, the ergonomics and characteristics of the seats and the soundproofing – essential vehicle qualities – have all been addressed in such a way as to create a relaxing interior ambience. 

In addition, the C4 features a range of equipment to create a feel-good ambience, such as the glazed panoramic roof and the scented air freshener. 

The scented air freshener 

A scented air freshener, styled to match the dashboard design, also contributes to the relaxed onboard atmosphere. 

A choice of nine fragrances

The air freshener is available with a choice of nine fragrances: Citrus and Passion, Amber and Sandalwood, Cinnamon and Ginger, Lotus flower, Vanilla, Jasmin and Mimosa, Soft Lavander, Mint and Musk, Ylang and Bamboo.

All these fragrances were developed by Robertet, a company specialising in the creation of perfumes.

Customers will receive a kit with three fragrances (Vanilla, Mint and Musk, Ylang and Bamboo) on delivery of their car.

A fully integrated system

Placed on the central air vent, the scented air freshener diffuses the fragrance selected through the air conditioning system. A knob lets the user switch the system off or adjust the quantity of perfumed air.

The perfumes come in the form of sealed, individual cartridges, so the fragrance can be changed at any time.

A cartridge lasts around two months, based on one hour of daily use. Refills are available from the Citroën network.

 

Seats tailored to a full range of tastes and body shapes 

Looking beyond their styling, which is an explicit statement of their qualities, the seats of the C4 are designed to ensure an outstanding level of comfort as well as excellent support. 

Firm support, adapted to everybody’s tastes

To reflect customers’ tastes more effectively, the C4 is equipped with “comfort” or “vitality” seats, depending on the trim level selected. 

“Comfort” seating ensures excellent damping and also provides sufficient support to hold the occupant firmly in place without becoming restrictive. Placing the emphasis on comfort in use, it is perfect for smooth, relaxed driving. 

“Vitality” seating is firmer to the touch with more pronounced support. It corresponds to the pursuit of stronger driving sensations and a more dynamic driving style. 

Pertinent settings

In addition to the conventional seat settings (fore-and-aft adjustment, angle of back rest), the C4 also includes a number of other settings to ensure that all the occupants can find a position to suit their body shape and driving habits:

  • steering wheel adjustable for height and reach,
  • a driver’s seat adjuster that can be raised over 50 mm,
  • manual lumbar adjustment on the driver’s seat.

The C4 can also be equipped with an electrically controlled driver’s seat. In this case, the settings are memorised to enable different drivers to immediately find their usual settings. 

Focus on acoustic comfort 

To optimise acoustic comfort on board the C4, extensive studies were conducted on sealing, and sources of wind noise. 

The main factors contributing to sound insulation are:

  • the flag-shaped exterior rearview mirrors,
  • the laminated windscreen with a damping film between two sheets of glass,
  • the thick glass used for the side windows (3.82 mm instead of the 3 mm usually found on vehicles in this segment),
  • the windscreen wipers integrated with the scuttle aperture,
  • the anti-turbulence windscreen seal,
  • the double door seals,
  • the treating and filling of box sections.

Available as an option, the laminated side windows reinforce the filtering of wind noise and external nuisances. 

Individual thermal comfort 

To satisfy requests for individual comfort functions at the front, the C4 features automatic two-zone air conditioning. The driver and front passenger can then choose their own temperature settings. 

The automatic air conditioning system is equipped with:

  • a particulate and pollutant gas filter,
  • an air recycling function, activated using controls on the steering wheel and air conditioning panel,
  • a heat-reflecting windscreen, which considerably increases the reflection of ultraviolet rays.

PRACTICAL CONVENIENCE

With its many stowage compartments, easily adaptable, modular passenger compartment and boot foldaway partition, the C4 is an easygoing car that adapts to the requirements and needs of the moment. 

A host of practical and well designed stowage compartments 

From the dashboard to the consoles and door panels, the interior of the C4 possesses generous stowage, including: a vast glove box, bins in the doors, can-holders, a drawer under the front passenger seat and nets on the backs of the front seats. 

Evenly distributed around the passenger compartment, these stowage compartments were designed for practical use. The closed stowage compartments have a damped opening, the drawers are of the push/pull type and the ash tray is illuminated, as is the glovebox, which may also be cooled. Some stowage compartments are intended for specific purposes, such as the bag hook on the passenger side of the central console or the overhead eyewear holder on the driver’s side. 

A number of stowage compartments are closed in order to maintain the ambient, uncluttered atmosphere. For example, the front central armrest, with fore-and-aft adjustment, has a stowage compartment for CDs or the CD stacker. The console is also equipped with a 12V socket and a cigarette lighter. 

Easy modularity 

The C4 features a 60/40 split-folding rear seat back and cushions. Simple attachments make it easy to take advantage of the C4’s modular interior. 

The seat backs unlock easily and can be folded down:

  • directly onto the seat cushions,
  • with the seat cushions raised, in order to obtain additional space and a virtually flat load floor,
  • using clips, after the fast-fit seat cushions are removed. In this configuration, the loading space extends up to the front seats.

A new boot foldaway partition

The boot of the C4 features a new partitioning system. This system is designed to isolate and securely hold the objects placed in the boot. 

A simple function lets the user fold out the partitions integrated in the boot sill to create three separate compartments. 

When folded, these partitions disappear totally into the thickness of the boot sill. When partitioning is not used, the boot regains its full loading volume. 

The boot of the C4 can also be fitted with a closed stowage bin on the sides, a stowage net and a range of hooks to hang bags up. 

 

HIGH-TECH COMMUNICATION EQUIPMENT

 

To enhance onboard comfort, the driver can choose from a range of hightech equipment including:

  • the NaviDrive telematics system for stress-free driving,
  • the JBL hi-fi system for high-level acoustics,
  • the Bluetooth hands-free telephone system for safe communication.

Stress-free driving with NaviDrive 

The C4 is available with the new-generation NaviDrive telematics system. 

It offers a number of essential functions: a GPS navigation system, a GSM dual-band hands-free telephone with access to the address book and audio system (radio and 5-CD stacker). At the same time, passengers can use the screen or voice synthesis function to read the SMS messages received over the phone. 

The main functions can be accessed easily using the steering-wheel controls, which can also be used for the voice recognition and synthesis functions. NaviDrive can be controlled by the user’s voice without any preliminary learning time. This feature is very useful for making phone calls, finding your way, or accessing the address book without risk. The system can also be controlled directly using the unit integrated with the dashboard. 

The functions are displayed on a black-and-white screen or on a large 16:9 colour screen. 

NaviDrive was also designed to offer a number of additional customer services: Citroën Emergency, Citroën Assistance and Citroën On Line. 

Working with the GPS and telephone functions, Citroën Emergency makes it possible to locate the vehicle if the driver has an accident or is ill, for example, and to access the services of a call centre. 

A customised hi-fi function 

JBL, one of the world’s leading audio specialists, has developed a hi-fi system specially for the C4. The new system is designed to offer customised acoustics of superb quality. 

The hi-fi system comprises ten loudspeakers in six locations, together with a subwoofer that is fitted in the boot. The presence of the subwoofer in the boot provides wraparound sound quality and an extremely faithful reproduction of musical material. 

The system is controlled by an amplifier located under the front passenger seat. This unit is parametered with the acoustic settings defined and optimised for the cabin of the C4. Both driver and passengers enjoy excellent sound quality, along with acoustic reproduction that is perfectly adapted to their environment in all circumstances. 

Making telephone calls safely with Bluetooth 

The C4 features a Bluetooth hands-free telephone system (depending on the country) in which the address book is displayed on the vehicle’s multifunction screen. 

This hands-free telephone system, based on Bluetooth wireless technology, is integrated with the passenger compartment. 

Bluetooth is a convenient and safe option for making personal in-car calls from a mobile phone, since the driver can make calls without taking the phone out of his pocket. In this way, he can make phone calls from the car without taking his eyes off the road or releasing the wheel. 

To make a hands-free call, the driver uses the ergonomic control function on the wheel, and the microphone built into the roof. Conversations are relayed over the C4’s audio system. 

The driver selects the name of a correspondent from the address book of his mobile phone, using the steering wheel controls. He can also use the “voice recognition” function to initiate a call. 

The phone directory and the name of the correspondent are displayed on the vehicle’s multifunction screen.

INNOVATIONS FOR ON-BOARD COMFORT AND RELAXED DRIVING The interior of the C4 boasts a host of innovations in driving ergonomics, life on-board and functional convenience. In addition, the C4 is also available with an array of high-tech communication equipment. DRIVING ERGONOMICS The C4 features a dashboard of clean design lines with a fixed-centred controls steering wheel that places driving aids within easy reach of the driver. At the same time, some of the instruments are positioned in the centre of the dashboard so that the passengers can contribute to the ride. With the C4, onboard comfort means safety and well-being. The multifunctional fixed-centred controls steering wheel The fixed centre of the steering wheel features the main comfort functions and driving aids. This layout places the emphasis on ergonomics and easy use, thus promoting driving pleasure. Easy operation The main characteristic of the C4 steering wheel is its fixed hub. The centre of the wheel no longer turns with the rim. The technical principle is simple: a toothed ring linked to the steering wheel engages an inner pinion, itself linked to the steering column. The space between the ring and the pinion is used to couple the fixed components: the steering wheel hub and the steering column mounting. A host of advantages The multifunctional fixed-centred controls steering wheel offers the following advantages: o controls are grouped in the centre of the steering wheel, thus freeing up space on the dashboard, and giving it a simpler, uncluttered look; o significant improvements in ergonomics, since the controls are grouped in a stable and easily accessible position, so that the driver does not have to take his hands off the wheel; o as the controls are on the steering wheel, they remain easily visible, even at night, thanks to the use of illuminated pictograms; o in terms of safety, the fixed-centre design of the steering wheel makes it possible to install a shape-optimised driver airbag for improved driver protection. Balanced distribution of controls The controls are split into four different areas, each with four buttons and a knob: o the top right-hand area groups the radio controls, with volume and station settings, the memorised station search function, and the mute function; o the bottom right-hand area provides access to the multifunction screen, with - in particular - the on-board computer and the NaviDrive navigation system; o the top left-hand area is dedicated to the speed limiter and cruise control. If the driver opts for one of these driving aids, a pictogram will appear on the translucent instrument cluster, showing the mode selected and the programmed speed; o the bottom left-hand area groups the controls for vehicle options. For example, the voice control of the NaviDrive navigation system, the telephone controls, the driver-configured button offering “black panel” lighting as the default function, or the air recycling function. The horn is on the lower part of the steering wheel. Conventional driving functions (lighting and wiping) maintain their usual layout, with standard stalk switches. Driver-dedicated steering-wheel display Driving information intended specifically for the driver is displayed immediately in front of him. This is the case, for example, of the rev counter, the indicator and headlamp settings, and the mode/gear speed selected on versions equipped with an automatic gearbox. The background of the rev counter turns red to show that the engine has reached its maximum speed. Fitted on the steering column, this display unit moves with the steering wheel to remain easily legible at all times. A dashboard designed to promote relaxed driving and shared information The clean, soft lines of the dashboard create an uncluttered look that is relaxing on the eye. Enhancing this effect, curves and relief are kept to a minimum. The choice of colours and materials reflects the same approach to design. The dashboard is designed to share information, in the same way as on a people-carrier. The centre features three display units: o a translucent instrument cluster, o a multifunction screen with the on-board computer and NaviDrive navigation system, o an air-conditioning display unit for vehicles equipped with automatic air conditioning. The central translucent instrument cluster The instrument cluster displays information on a translucent strip located in the centre of the dashboard. Clear information The translucent instrument cluster provides the following information: o vehicle speed, o petrol gauge and range, o water temperature o total and partial mileage, o information on the oil level, o speed settings for the cruise control and speed limiter, o maintenance indicator. Indicators corresponding to the child safety function, the seatbelt warning lights for the five seats, and ESP disablement are displayed on either side of the translucent instrument cluster. Perfect legibility As the instrument cluster is located in the centre of the dashboard, the translucent strip captures the light perfectly. As the display contrast adjusts instantly to the light, legibility is perfect in all circumstances, by day and night, in full sunlight or in darkness. LIFE ON BOARD The cabin of the C4 is designed to optimise passenger comfort. The cabin layout, the ergonomics and characteristics of the seats and the soundproofing - essential vehicle qualities - have all been addressed in such a way as to create a relaxing interior ambience. In addition, the C4 features a range of equipment to create a feel-good ambience, such as the glazed panoramic roof and the scented air freshener. The scented air freshener A scented air freshener, styled to match the dashboard design, also contributes to the relaxed onboard atmosphere. A choice of nine fragrances The air freshener is available with a choice of nine fragrances: Citrus and Passion, Amber and Sandalwood, Cinnamon and Ginger, Lotus flower, Vanilla, Jasmin and Mimosa, Soft Lavander, Mint and Musk, Ylang and Bamboo. All these fragrances were developed by Robertet, a company specialising in the creation of perfumes. Customers will receive a kit with three fragrances (Vanilla, Mint and Musk, Ylang and Bamboo) on delivery of their car. A fully integrated system Placed on the central air vent, the scented air freshener diffuses the fragrance selected through the air conditioning system. A knob lets the user switch the system off or adjust the quantity of perfumed air. The perfumes come in the form of sealed, individual cartridges, so the fragrance can be changed at any time. A cartridge lasts around two months, based on one hour of daily use. Refills are available from the Citroën network. Seats tailored to a full range of tastes and body shapes Looking beyond their styling, which is an explicit statement of their qualities, the seats of the C4 are designed to ensure an outstanding level of comfort as well as excellent support. Firm support, adapted to everybody's tastes To reflect customers' tastes more effectively, the C4 is equipped with “comfort” or “vitality” seats, depending on the trim level selected. “Comfort” seating ensures excellent damping and also provides sufficient support to hold the occupant firmly in place without becoming restrictive. Placing the emphasis on comfort in use, it is perfect for smooth, relaxed driving. “Vitality” seating is firmer to the touch with more pronounced support. It corresponds to the pursuit of stronger driving sensations and a more dynamic driving style. Pertinent settings In addition to the conventional seat settings (fore-and-aft adjustment, angle of back rest), the C4 also includes a number of other settings to ensure that all the occupants can find a position to suit their body shape and driving habits: o steering wheel adjustable for height and reach, o a driver's seat adjuster that can be raised over 50 mm, o manual lumbar adjustment on the driver's seat. The C4 can also be equipped with an electrically controlled driver's seat. In this case, the settings are memorised to enable different drivers to immediately find their usual settings. Focus on acoustic comfort To optimise acoustic comfort on board the C4, extensive studies were conducted on sealing, and sources of wind noise. The main factors contributing to sound insulation are: o the flag-shaped exterior rearview mirrors, o the laminated windscreen with a damping film between two sheets of glass, o the thick glass used for the side windows (3.82 mm instead of the 3 mm usually found on vehicles in this segment), o the windscreen wipers integrated with the scuttle aperture, o the anti-turbulence windscreen seal, o the double door seals, o the treating and filling of box sections. Available as an option, the laminated side windows reinforce the filtering of wind noise and external nuisances. Individual thermal comfort To satisfy requests for individual comfort functions at the front, the C4 features automatic two-zone air conditioning. The driver and front passenger can then choose their own temperature settings. The automatic air conditioning system is equipped with: o a particulate and pollutant gas filter, o an air recycling function, activated using controls on the steering wheel and air conditioning panel, o a heat-reflecting windscreen, which considerably increases the reflection of ultraviolet rays. PRACTICAL CONVENIENCE With its many stowage compartments, easily adaptable, modular passenger compartment and boot foldaway partition, the C4 is an easygoing car that adapts to the requirements and needs of the moment. A host of practical and well designed stowage compartments From the dashboard to the consoles and door panels, the interior of the C4 possesses generous stowage, including: a vast glove box, bins in the doors, can-holders, a drawer under the front passenger seat and nets on the backs of the front seats. Evenly distributed around the passenger compartment, these stowage compartments were designed for practical use. The closed stowage compartments have a damped opening, the drawers are of the push/pull type and the ash tray is illuminated, as is the glovebox, which may also be cooled. Some stowage compartments are intended for specific purposes, such as the bag hook on the passenger side of the central console or the overhead eyewear holder on the driver's side. A number of stowage compartments are closed in order to maintain the ambient, uncluttered atmosphere. For example, the front central armrest, with fore-and-aft adjustment, has a stowage compartment for CDs or the CD stacker. The console is also equipped with a 12V socket and a cigarette lighter. Easy modularity The C4 features a 60/40 split-folding rear seat back and cushions. Simple attachments make it easy to take advantage of the C4's modular interior. The seat backs unlock easily and can be folded down: o directly onto the seat cushions, o with the seat cushions raised, in order to obtain additional space and a virtually flat load floor, o using clips, after the fast-fit seat cushions are removed. In this configuration, the loading space extends up to the front seats. A new boot foldaway partition The boot of the C4 features a new partitioning system. This system is designed to isolate and securely hold the objects placed in the boot. A simple function lets the user fold out the partitions integrated in the boot sill to create three separate compartments. When folded, these partitions disappear totally into the thickness of the boot sill. When partitioning is not used, the boot regains its full loading volume. The boot of the C4 can also be fitted with a closed stowage bin on the sides, a stowage net and a range of hooks to hang bags up. HIGH-TECH COMMUNICATION EQUIPMENT To enhance onboard comfort, the driver can choose from a range of hightech equipment including: o the NaviDrive telematics system for stress-free driving, o the JBL hi-fi system for high-level acoustics, o the Bluetooth hands-free telephone system for safe communication. Stress-free driving with NaviDrive The C4 is available with the new-generation NaviDrive telematics system. It offers a number of essential functions: a GPS navigation system, a GSM dual-band hands-free telephone with access to the address book and audio system (radio and 5-CD stacker). At the same time, passengers can use the screen or voice synthesis function to read the SMS messages received over the phone. The main functions can be accessed easily using the steering-wheel controls, which can also be used for the voice recognition and synthesis functions. NaviDrive can be controlled by the user's voice without any preliminary learning time. This feature is very useful for making phone calls, finding your way, or accessing the address book without risk. The system can also be controlled directly using the unit integrated with the dashboard. The functions are displayed on a black-and-white screen or on a large 16:9 colour screen. NaviDrive was also designed to offer a number of additional customer services: Citroën Emergency, Citroën Assistance and Citroën On Line. Working with the GPS and telephone functions, Citroën Emergency makes it possible to locate the vehicle if the driver has an accident or is ill, for example, and to access the services of a call centre. A customised hi-fi function JBL, one of the world's leading audio specialists, has developed a hi-fi system specially for the C4. The new system is designed to offer customised acoustics of superb quality. The hi-fi system comprises ten loudspeakers in six locations, together with a subwoofer that is fitted in the boot. The presence of the subwoofer in the boot provides wraparound sound quality and an extremely faithful reproduction of musical material. The system is controlled by an amplifier located under the front passenger seat. This unit is parametered with the acoustic settings defined and optimised for the cabin of the C4. Both driver and passengers enjoy excellent sound quality, along with acoustic reproduction that is perfectly adapted to their environment in all circumstances. Making telephone calls safely with Bluetooth The C4 features a Bluetooth hands-free telephone system (depending on the country) in which the address book is displayed on the vehicle's multifunction screen. This hands-free telephone system, based on Bluetooth wireless technology, is integrated with the passenger compartment. Bluetooth is a convenient and safe option for making personal in-car calls from a mobile phone, since the driver can make calls without taking the phone out of his pocket. In this way, he can make phone calls from the car without taking his eyes off the road or releasing the wheel. To make a hands-free call, the driver uses the ergonomic control function on the wheel, and the microphone built into the roof. Conversations are relayed over the C4's audio system. The driver selects the name of a correspondent from the address book of his mobile phone, using the steering wheel controls. He can also use the “voice recognition” function to initiate a call. The phone directory and the name of the correspondent are displayed on the vehicle's multifunction screen. Click to see high resolution image in new window