CITROËN DS4 DSign, Description

DIMENSIONS

GLOSSARY

  e-HDi DIESEL ENGINE

The e-HDi 115 Airdream EGS6 engine is  
capable of 64.2 mpg and CO

2

 emissions of just 

114g/km combined with the EGS gearbox. It has 
a reversible starter-alternator that works in tandem 
with an e-booster to provide a seamless Stop & 
Start function. Going further than other similar 
systems, the e-HDi’s Stop & Start puts the engine 
into idle mode while decelerating before coming 
to a complete standstill. This reduces consumption 
by 15% in urban driving. 

  HIGH-PRESSURE DIRECT INJECTION  

DIESEL ENGINE
Citroën’s HDi diesel engines operate with the 
fuel under extremely high pressure, enabling 
microscopically precise injection control. With 
this level of management it’s possible to inject 
at different times during the same engine stroke 
allowing total control over the combustion 
process. This has allowed our engineers to reduce 
carbon monoxide emissions by 40%, unburned 
hydrocarbons by 50% and engine particulates 
by 60%. Fuel consumption is 20% lower than 
a prechamber diesel engine, resulting in an 
equivalent reduction in CO

2

 emissions.

  PETROL ENGINES

Part of Citroën’s range of state-of-the-art engines,  
VTi and THP petrol powertrains are friction 
optimised and benefit from an inlet camshaft 
variable valve timing system that constantly 
measures the pressure on the accelerator and 
precisely regulates the quantity of air entering 
the cylinders. VTi engines boast advanced 
variable inlet valve lift and exhaust camshaft 
variable valve timing systems whilst THP engines 
are turbocharged. This guarantees outstanding 
efficiency and allows for immediate response with 
plenty of low range torque available.

  CITROËN ETOUCH EMERGENCY  

AND ASSISTANCE SYSTEM
In the event of an accident or sudden health 
problem, one push of the ‘SOS’ button will 
instantly contact the emergency services. If there’s a 
more serious incident, SOS activates automatically. 
After a breakdown, one push on the ‘chevron’ 
button will alert Citroën Assistance, sending both 
location details and an initial fault report. 

  CONNECTING BOX

Integrated Bluetooth

®

 hands-free phone function 

with USB socket and jack to plug in a portable 
MP3 player.  

  EMYWAY SATELLITE NAVIGATION SYSTEM

The eMyWay satellite navigation system features a 
7” screen and covers UK and Europe. Its in-built 
memory provides information about speed limits 
and lets you know which lane to use when reaching 
complex intersections. The system also lets you 
adapt your route based on traffic conditions, with 
data provided by Trafficmaster and ViaMichelin in 
the UK and France.

  ANTI-LOCK BRAKING SYSTEM (ABS)

Computer-controlled braking assistance designed 
to prevent the wheels from locking under extreme 
braking. This enables the car to continue being 
steered and therefore controlled during this 
braking incident. Citroën DS4’s ABS system is 
further enhanced with EBA and EBD.

  ELECTRONIC BRAKEFORCE  

DISTRIBUTION (EBD)
A conventional ABS system cannot account for 
any of the four wheels wanting to lock more quickly 
than the others (for example, two of the wheels 
may be on snow and two on tarmac). EBD reads 
the deceleration rate of each wheel individually and 
applies the ABS principles accordingly.

  EMERGENCY BRAKING ASSISTANCE (EBA)

As drivers we find it difficult to instinctively brake very 
hard, but this is often what is needed in those rare 
emergency situations. The EBA system recognises 
our ‘attempt’ to brake hard and in combination with 
the ABS and EBD systems instantly applies the 
maximum stopping power possible.

  ELECTRONIC STABILITY PROGRAMME (ESP)

This is computer-controlled traction assistance and 
is provided primarily through the braking systems. 
The ESP’s control unit constantly compares where 
the driver intends going (through the position of 
the steering wheel) with where the vehicle is actually 
going and, if necessary, makes speed corrections 
to each wheel individually through braking or 
engine torque to keep the vehicle ‘in line’.

  ON-BOARD TRIP COMPUTER

Citroën DS4’s multi-function on-board trip computer 
provides you with information at your fingertips. At 
the touch of a button you can view a range of data 
like fuel consumption, average speed and mileage 
possible at your current fuel level.

  FRONT SEAT BELT PRE-TENSIONERS

In the event of a crash, a pre-tensioner will tighten 
the seat belt almost instantaneously. This reduces 
the load on the occupant in a violent crash. Like 
airbags, pre-tensioners are triggered by sensors in 
the car’s body, and use explosively expanding gas 
to drive a piston that retracts the belt. Seat belt  
pre-tensioners also lower the risk of ‘submarining’, 
which is when a passenger slides forward under a 
loosely worn seat belt.

  ISOFIX

A standardised and more simple method for 
installing child seats, each seat is ‘clicked’ into 
place via a three point system. On Citroën DS4, 
Isofix is installed on the outer rear seats.

All measurements are in millimetres.

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