The document discusses HYbrid4, PSA Peugeot Citroën's new diesel hybrid technology. Some key points: - It combines a 163hp 2.0L HDi diesel engine in the front with a 37hp electric motor in the rear, for a total of 200hp. - It offers performance comparable to larger engines but uses 35% less fuel and emits up to 30% less CO2 than a diesel powertrain. - It leverages PSA's expertise in diesel, electric vehicles, and components like the manual gearbox and Stop & Start system. - The parallel powertrain allows the diesel and electric motors to work together or separately, utilizing each's

1. Press Kit
HYbrid4 Technology

2. C O N T E N T S
• HYbrid4 Facts and Figures
• Hybrid Technology: A New Component in PSA Peugeot Citroën’s
Low-Carbon Strategy
• The HYbrid4 Diesel Hybrid: Diesel and Electric Energy Combined in
an Innovative Architecture for a Host of Advantages
• HYbrid4 World Premiere: Leveraging Technology for an
Uncompromising Driving Experience
• HYbrid4 Technology: Helping to Move the Model Ranges Upmarket
• The HYbrid4 in Pictures and Press Contacts
• Appendices
o Presentation by Guillaume Faury, Executive Vice President, Research and
Development, PSA Peugeot Citroën
o Technical details

3. HYbrid4 Diesel Hybrid Facts and Figures
Innovative Technology for an Uncompromising Driving Experience
High environmental performance with diesel and electric energy combined in an
innovative architecture for a host of advantages
- Performance:
o A full-hybrid four-wheel drive with a 200 hp HYbrid4 diesel powertrain
o 2.0-litre HDi DPF diesel engine (163 hp) in the front and an electric motor
(37 hp) in the rear.
- Comfort and driveability: Choice of four driving modes.
- Environmental protection: Breakthrough performance in terms of mileage and
emissions, for the same power.
o Uses 45% less fuel than a similar-size petrol engine.
o Uses 35% less fuel than a similar-size diesel engine.
o Emits 99-109 g of CO2 per km, or up to 30% less than a similar-size diesel
powertrain in city driving.
- Distinctive features: Outstanding acoustic performance and remarkably silent in
ZEV mode.
Made in France:
All of the Group’s HYbrid4 vehicles will be produced in France:
- Peugeot 3008 HYbrid4 and Citroën DS5 HYbrid4 in Sochaux
- Peugeot 508 HYbrid4 sedan and Peugeot 508 RXH in Rennes
- 163 hp 2.0-litre HDi DPF engine in Trémery
- Manual compact automated gearbox in Valenciennes
- Multi-arm rear axle assembly in Mulouse
R&D:
- Investment of €500 million
- 300 patents filed for the world’s first diesel hybrid
- 1,500 engineers and technicians involved in the project
- 5 million km of tests to validate the technology
HYbrid4 vehicle launch dates
- Peugeot 3008 HYbrid4: End of February 2012
- Peugeot 508 RXH: End of March 2012
- Citroën DS5 HYbrid4: March 2012
- Peugeot 508 HYbrid4 sedan: Summer 2012
Sales objectives in Europe:
- 40,000 units a year as from 2013
A world first that has won numerous awards in Europe
- Germany: Paul Pietsch award from Motor Presse in January 2012
- Germany: Goldenes Lenkrad award and Goodyear Innovation Award 2011 from
Auto Bild Allrad magazine
- Germany: Öko Globe 2011 award in the “mass-produced sustainable energy”
category
- United Kingdom: Best Eco Car of 2011 award from Diesel Car Magazine
- United Kingdom: Family Car of the Year from TOP GEAR

4. - Austria: ARBÖ-Umweltpreis 2011
- France: Prix Recherche & Innovation Auto Environnement MAAF 2011
- France: Argus 2011 “Green car” award
- Italy: Miglior Innovazione Tecnologica from Motor Media TV
Hybrids: An integral part of PSA Peugeot Citroën’s technological strategy
- This world first positions PSA Peugeot Citroën as a diesel hybrid pioneer with an
ambitious development programme.
- Hybrid technologies should allow the Group to comply with regulations on CO2
emissions and maintain its environmental leadership.
- The recent signature of a joint venture agreement with BMW (BMW Peugeot
Citroën Electrification) will help the Group become a European leader in hybrid
vehicle components.
Leveraging the best expertise: An innovation and a world first
- HYbrid4 technology combines the best technologies developed by our engineers
for the diesel engine, electric motor, second-generation Stop & Start system and
the manual compact automated gearbox.
- A pioneer in green technologies, the HYbrid4 is designed to become a European
benchmark, just like the DPF and e-HDI engine.
- The next step will be the plug-in hybrid.
Helping to move the model ranges upmarket
The decision to equip series models like the Peugeot 3008 and 508 with HYbrid4
technology is helping to move the Group's model ranges upmarket by offering:
- High-level performance combined with outstanding road handling.
- Ease of use, with a choice of four driving modes: Auto, Zero Emission Vehicle
(ZEV), Four-Wheel Drive (4WD) and Sport.
- A quiet ride, with the ability to run in pure electric mode.
- The peace of mind that comes from the added safety of four-wheel drive.
- A tiny carbon footprint, with emissions as low as 99 g CO2/km.
- A significant decline in fuel consumption (35% less than a similar-size diesel
powertrain).

5. PSA Peugeot Citroën’s strategy in the area of low-carbon vehicles is to promote
sustainable mobility by offering “a clean car for everyone”.
Although cars continue to be the most practical mode of transportation for individual
mobility needs, governments worldwide are setting increasingly ambitious targets for
reducing CO2 emissions. As a result, electric and hybrid vehicles could make up 15% of
the market in 2020.
Backed by its experience in this area, PSA Peugeot Citroën is resolutely committed to
demonstrating its environmental leadership and staying a step ahead in low-carbon
mobility. The Group intends to continuously raise the bar on environmental performance
while giving customers the affordability and features they expect.
Objective for 2012:
Sell one million vehicles that emit less than 120g/km of CO2 in Europe each year.

6. Hybrid Technology: A New Component in PSA Peugeot Citroën’s
Low-Carbon Strategy
Reducing CO2 emissions is more important than ever…
Governments around the world are setting increasingly ambitious targets for reducing
CO2 emissions.
Major CO2 emission targets through 2020
…and PSA Peugeot Citroën is ahead of the curve
The vast majority of vehicles (85%) will still be powered by internal
combustion engines in 2020.
To reduce CO2 emissions, PSA Peugeot Citroën is continuing to improve
its petrol and diesel engines through:
Downsizing, with its virtuous impact on CO2.
Enhanced engine efficiency combined with different levels of hybrid
technology, including second-generation Stop & Start micro-hybrid,
HYbrid4 full-hybrid and plug-in hybrid solutions.

7. The HYbrid4 Diesel Hybrid
Diesel and Electric Energy Combined in an Innovative Architecture
for a Host of Advantages
PSA Peugeot Citroën has been developing hybrid technologies for many years.
A pioneer in hybrid technology, PSA Peugeot Citroën first introduced the Stop & Start
system on the Citroën C2 and C3 in 2004. Stop & Start, the first level in hybrid
technology, is especially effective in city driving, where vehicles spend about 30% of
their time at rest for an average of 15 seconds, resulting in unneeded waste. Stop &
Start shuts down the internal combustion engine when the vehicle is at a standstill and
automatically starts it back up again when the driver presses on the accelerator, thereby
reducing fuel consumption and carbon emissions.
Now, in a world first, PSA Peugeot Citroën is expanding its approach and introducing a
new, innovative hybrid technology:
The HYbrid4 diesel hybrid
Three key strategic decisions guided the technical choices involved in developing this
technology:
1. Leverage the best existing components and expertise in a consistent,
efficient approach.
Very quickly, the HDi DPF engine stood out as the most efficient and consistent
technical solution for the following reasons:
- The HDi DPF corresponds to the expectations of European customers, as a large
percentage of cars sold in Europe are diesels.
- PSA Peugeot Citroën has recognised expertise in diesel engines based on HDi
DPF technologies.
- HDi DPF diesel engines have a better thermodynamic performance than
petrol engines, using around 30% less fuel for a similar sized engine.
- The HDi DPF engine helps both preserve energy resources, with the best
possible mileage, and reduce the automobile’s contribution to the greenhouse
effect, with the lowest possible CO2 emissions.
On the electric side, PSA Peugeot Citroën has capitalised on its long-standing
expertise in electric vehicles. To this day, the electric Peugeot 106, sold between
1995 and 2003, remains the highest selling zero emission vehicle in the world. The Group
has followed up with two new-generation pure electrics: the Peugeot iOn and the Citroën
C-Zero, both launched in late 2010. With 30% of the market, PSA Peugeot Citroën is
Europe’s leading EV manufacturer.

8. The 6-speed manual compact automated gearbox used in the Peugeot and Citroën
ranges since 2008 was a natural choice to mate with the diesel powertrain thanks to its
automatic shift management system and role in optimising fuel consumption (an
automatic gearbox would have resulted in higher carbon emissions).
Similarly, the Stop & Start system (STT) on the diesel hybrid grew out of the Group’s
experience with the Citroën C2 and C3. The latest generation STT has been broadly
deployed across the Peugeot and Citroën line-ups since 2011.
2. Use a parallel design.
PSA Peugeot Citroën’s hybrids are powered by two systems that can propel the vehicle
separately or together:
- The internal combustion engine works best in highway driving, and can be used to
power any type of vehicle, while still delivering the safety and enjoyable driving
experience customers want.
- The electric motor is more efficient at start-up and low speeds (under 55 kmh),
conditions that correspond to city driving—the most appropriate use for electric vehicles.
- The two systems can also work together in certain circumstances, for example to
provide extra boost during sudden acceleration when passing another vehicle.
Hybrid vehicle performance is therefore directly comparable to that of a single
powertrain vehicle with a larger engine, while offering breakthrough gains in terms of
fuel consumption and CO2 emissions (around 35% less in combined-cycle driving, for
equivalent performance).
These two fundamental choices—leveraging the Group’s expertise in HDi
engines and electric motors and using a parallel design—paved the way for an
innovative architecture combining, for the first time, a front-mounted internal
combustion engine and an electric motor in the rear.

9. 3. Place the electric motor in the rear.
Technically speaking, the front-mounted internal combustion engine powers the front
wheels, while the electric motor on the rear axle assembly powers the rear wheels.
This innovative architecture allows for four-wheel drive. What’s more, drive-by-wire
technology eliminates the need for a standard 4WD differential, which improves mileage
and makes for a roomier, more stylish passenger compartment.
This architecture also makes it easier to install the technology on different platforms, so
that the Group can ultimately offer hybrids across the model line-up.
HYbrid4 technology offers a major performance breakthrough in terms of fuel efficiency
and CO2 emissions, which stand at 99 g -109 g per km, depending on the model. This
represents a reduction of around 35% in combined-cycle driving.
The Peugeot 3008 HYbrid4, 508 RXH and 508 HYbrid4 and the Citroën DS5 HYbrid4 can
run in zero emission (ZEV) mode, which drastically reduces fuel consumption in city
driving. A vehicle in ZEV mode offers an amazingly noiseless, carbon-free ride.
HYbrid4 technology delivers high performance:
• Maximum combined power of 147 kW/200 hp from the 2.0 litre HDi DPF
engine (120 kW/163 hp) and the electric motor (27 kW/37 hp).
Maximum torque of 300 Nm (front) and 200 Nm (rear).
• Additional boost during sudden acceleration.
• Four-wheel drive, offering the same off-road capabilities as a standard SUV, for
added safety and peace of mind.

10. HYbrid4 World Premiere
Leveraging Technology for an Uncompromising Driving Experience
Peugeot 3008 HYbrid4: High environmental performance and driving pleasure
In February 2012, HYbrid4 technology came to market on the Peugeot 3008. Thanks to
the environmentally friendly combination of diesel and electric energy, the 3008
crossover consumes only 3.8 litres per 100 km and emits just 99 g of CO2 per km. PSA
Peugeot Citroën’s easy-to-use hybrid technology delivers even greater driving freedom,
allowing motorists to choose from among four driving modes and providing the peace of
mind offered by four-wheel drive.
Available starting in February 2012
Peugeot 508 RXH: An original vision of the all-road universe
The Peugeot 508 RXH’s style and innovative HYbrid4 powertrain gives it features that
combine freedom and driving pleasure. Unique and refined, with a wider body that sits
up higher off the ground, the 507 RXH also stands out for its singular look and powerful
style. It offers a whole new experience in the all-road segment, with a ZEV mode that is
ideal for city driving and that helps reduce fuel consumption in combined-cycle driving to
under 4.1 litres per 100 km, for CO2 emissions of less than 107 g per km.
Available starting in March 2012
Citroën DS5 HYbrid4: An exceptional combination of environmental stewardship
and high performance
The use of HYbrid4 technology on the Citroën DS5 has reduced average fuel consumption
and CO2 emissions by more than 20%. Certified fuel consumption and CO2 emissions in
combined-cycle driving stand at 3.8 litres per 100 km and 99 g per km, respectively. All
other things being equal, this represents a decrease of around 23% from the HDi 160
BVM6’s already excellent performance of 4.9 litres per 100 km and 129 g per km. In city
driving, the decrease comes to 38% (3.9 litres per 100 km versus 6.3 litres per 100 km).
Available starting in March 2012
Peugeot 508 HYbrid4, available in the summer of 2012

11. HYbrid4 Technology: Helping to Move the Model Ranges Upmarket
The decision to equip series models like the Peugeot 3008 and 508 with HYbrid4
technology is helping to move the Group's model ranges upmarket by offering:
- The advantages of two fuel-efficient technologies, combining the diesel HDi
engine's performance with the zero-emission electric motor’s efficiency.
- High-level performance and outstanding road handling.
- Ease of use, with a choice of four driving modes: Auto, Zero Emission Vehicle
(ZEV), Four-Wheel Drive (4WD) and Sport.
- A quiet ride, with the ability to run in pure electric mode.
- The peace of mind that comes from the added safety of four-wheel drive.
- A tiny carbon footprint, with emissions as low as 99 g CO2/km.
- A significant decline in fuel consumption (35% less than a similar-size diesel
powertrain).

12. The HYbrid4 in pictures
Pictures of the Group’s HYbrid4 technology are available for downloading at:
http://mediatheque.psa.fr
Login: HYBRID
Password: 2012
HYbrid4 videos are available at:
http://youtu.be/0FM-1Figjmc (in French)
http://youtu.be/mB0yWRqanIg (in English)
Press Contacts
Laure de Servigny
laure.deservigny@mpsa.com +33 (0)1 40 66 35 42
Caroline Brugier
caroline.brugier-corbiere@mpsa.com +33 (0)1 40 66 58 54

13. Paris
28 February 2012
The HYbrid4 Diesel Hybrid
A world first and an integral part of PSA Peugeot
Citroën’s strategy to innovate and move the
model ranges upmarket

14. Using innovation to meet the automotive industry’s major challenges
How can we
adapt to
new patterns of
mobility?
• Today: 280 million people live in cities with
populations of more than 10 million
• 2007: Worldwide, more people live in cities
than in rural areas
• 2015: 350 million people will live in cities with
populations of more than 10 million
Infrastructure and mobility challenges
Climate change
• Strict regulations
• Environmentally aware customers
• Governments in favour of “sustainable
mobility”
Environmental challenges
• Vehicle quality and lifespan
• Increasingly safe vehicles
• Competitive value for the money
Technical and manufacturing challenges
Today’s Major Challenges – Tomorrow’s Opportunities
Changing
customer needs
Urbanisation

15. Increasingly Ambitious Targets for CO2 Emissions
Major CO2 emission targets through 2020

16. 4
PSA Peugeot Citroën
A Pioneer in Green Technologies…
Stop & Start
DPF
HDi engine 17,500,000 HDi engines since 1998
5,415,000 HDi DPF engines since 2000
Electric vehicles Peugeot 106 Electric in 1995
Peugeot iOn and Citroën C-Zero since 2010
First carmaker to offer a STT application (developed
in partnership with Valeo) deployed across the entire
diesel line-up
…That Have Become Market Benchmarks

17. 5
Constant Improvements in Internal Combustion
Engines for more Environmentally Friendly
Vehicles
A European leader in low carbon vehicles
Reduced fuel consumption for diesel (-30%) and petrol engines (-20%)
Leadership gained through the efficiency of HDi diesel engines
In early 2012, a new family of 3-cylinder petrol engines
Emissions reduced by 15-25 g CO2 /km
The vast majority of vehicles (85%) will still have internal combustion engines in
2020
PSA Peugeot Citroën will conserve its environmental leadership through:
Further downsizing of internal combustion engines
More efficient engines combined with different levels of hybrid technology:
• Second generation Stop & Start
• HYbrid4 full hybrid
• Plug-in hybrid

18. 6
A New Step: Diesel Hybrids for an Uncompromising
Driving Experience
Environmentally friendly
99 g of CO2/km
Fuel consumption down 35%*
High performance
200 hp/ 3.8l per 100km
4-wheel drive
Distinctive
World first
Combining diesel and
electric energy for a
host of advantages
4 driving modes
Comfort-Peace of Mind
Dynamism-Performance
Full diesel hybrid

19. 7
HYbrid4: A World Premiere Innovation “Made in
France”
Made in France
Peugeot 3008 HYbrid4 and Citroën DS5 HYbrid4 in Sochaux
Peugeot 508 HYbrid4 sedan and 508 RXH in Rennes
163 hp 2.0-litre HDI DPF engine in Trémery
Manual compact automated gearbox in Valenciennes
Multi-arm rear axle assembly in Mulhouse
R&D
Investment of €500 million
300 patents filed for the world’s first diesel hybrid
1,500 engineers and technicians involved
5 million km of tests to validate the technology
A world first that has won numerous awards in Europe
Germany: Paul Pietsch award from Motor Presse in January 2012
Germany: Goldenes Lenkrad and Goodyear Innovation Award 2011 Auto Bild Allrad magazine
Germany: Öko Globe 2011 in the “mass-produced sustainable energy”
UK: Family Car of the Year from TOP GEAR
France: Argus 2011 “Green Car” award

20. The HYbrid4 Programme:
Helping to Move the Model Range Upmarket
8
Peugeot 3008 in February
Peugeot 508 RXH late March
Citroën DS5 in March
Peugeot 508 this summer
2013 sales target in Europe: 40,000 units

21. The world’s first
diesel hybrid
Coupling diesel and electric energy for a host of advantages.
1
2
3
4
Electric motor
and associated
equipement in
the rear
Diesel engine
under the
bonnet
For
4-wheel drive
6
7
5
Electric motor (27 kW 37 hp)
High voltage Battery (NiMh)
Inverter / Control unit
1
2
3 4
5
6
7
8 kW high voltage Stop & Start
6 speed manual compact automated gearbox
120 kW, 2,0l HDi engine with DPF

22. Impressive
performance
> A cutting-edge technology delivering breakthrough performance while helping pro-
tect the environment :
- maximum combined power of 200 hp (147 kW), 163 hp from the 2.0l HDi FAP diesel
engine and 37 hp from the electric motor,
- up to 30 % reduction in CO2 emissions in city driving, compared with a similar diesel
engine.
To give an example, the Peugeot 3008 HYbrid4 offers fuel consumption of 3.8l/100 km,
with 99g of CO2/km in standard conditions.
> Highly advanced acoustics, remarkably silent in ZEV mode.
> Four different operating modes to suit all types of driving :
- Auto, for a focus on fuel-efficiency and comfort,
- Sport, for a livelier, more performance-oriented experience,
- 4WD, for driving under extreme conditions,
- ZEV, for noise- and carbon-free city driving.

23. Four different
driving modes
N
S
N
S
N
S
N
S
> The hybrid powertrain optimises fuel consump-
tion and driving comfort.
> The car runs on all-electric drive up to 70 km/h
for moderate acceleration.
> Above that speed, the diesel engine automati-
cally starts and takes over.
Auto mode
> Releasing the accelerator or applying the brakes automatically recharges the high-vol-
tage battery through energy recovery.
> The electric powertrain automatically compensates for torque differences when chan-
ging gears.
> Electric drive is available over a wide acceleration range.
> It operates up to 60 km/h and offers a range of 3 to 4 km.
> The diesel engine starts if the driver accelerates strongly, or if the battery has no charge
left.
Zéro Emission Vehicle (ZEV) mode
ZEV Mode
Acceleration
ZEV Mode
Decceleration

24. Four different
driving modes
N
S
N
S
N
S
N
S
N
S
N
S
N
S
N
S
> The full 200 hp is available by simulta-
neously running the diesel engine and elec-
tric motor.
> Engine speeds are higher and gear
changes faster.
> Accelerator pedal response is set for a
sportier driving style.
Sport mode
> The Electronic Stability Programme (ESP)
and powertrain optimise vehicle control.
> The two engines operate simultaneously.
> Torque is initially divided as follows :
- front : 60 %,
- rear : 40 %, up to 10 km/h.
> Torque then adjusts dynamically according
to wheel drift.
4-wheel drive (4WD) mode

25. Challenges of the
front powertrain
2.0 litre HDi FAP diesel engine
modified for hybrid operation
> New accessory housing with a
strengthened belt.
> Engine specifically calibrated to further
decrease fuel consumption and emis-
sions.
Manual compact automated gear-
box optimised for hybrid operation
> Use of a high efficiency oil.
> Special control unit and calibration for
lower noise and vibrations in ZEV mode.
> Improved gearbox driveability thanks to
torque compensation by the rear power-
train, for enhanced driving comfort.
Front powertrain – Stop and Start
> Permanent magnets allow a more com-
pact design (and better torque density :
Nm/m³).
> Torque rating of 52 Nm and gear ratio of
2.9 for quick start-up.
> 8.5 kW of power to guarantee sustained
power in 4WD mode.

26. Challenges of
the rear electric
powertrain
Hybrid Power Control Unit - HPCU
> A compact unit, comprising the power
converter, microprocessor and inverters.
> Optimised inverter control to meet acoustic
and vibration requirements.
High-voltage battery
(Sanyo high-voltage battery)
> Rated at 5.5 Ah/1.1 kWh for 4-km range in
ZEV mode.
> Nickel metal hydride (NiMh), a mature tech-
nology offering an excellent combination of
reliability, cost and performance.
Electric motor
(Bosch electric motor)
> Uses permanent magnets for a more compact
design (and better torque density : Nm/m³).
> Torque of 200 Nm transmitted to the wheel via
a 7.46 : 1 ratio; 27 kW of power in Sport mode.
Reduction gearbox
(GKN reduction gearbox)
> "Dog clutch" type gearbox, with high-effi-
ciency oil and optimised bearings to decrease
energy losses.
> Designed to automatically disconnect at 120
km/h, the top speed of the electric motor.
> Gears designed to meet noise and vibration
specifications.
Bosch
Hybrid Power
Control Unit
GKN
reduction
gearbox
Sanyo high-voltage battery
Bosch
electric
motor
Back
wheel
Back
wheel

27. A new rear axle
electrical module
The architecture of the platform 3
rear axle was retained to guarantee
vehicle functions and performance.
Certain components were modified
for this new application :
> new torsion beam for installation of the
electric motor,
> new pivot to adapt to the tracks on plat-
forms 2 and 3,
> new calliper for compatibility with new
pivot,
> new upper triangle to take up less
space.
A new assembly line was installed
at the PSA Peugeot Citroën plant in Mul-
house, France, to manufacture this mul-
ti-arm rear axle assembly.
triangle
pivot
calliperca
pivotorsion beam

28. Tailor-made ESP*
* Electronic Stability Programme
Development of an unprecedented antiskid regulator (ASR) system in
conjunction with Bosch
> Integration of the anti-slip function in the rear, in addition to a functional ASR on the
front axle.
> Development of ASR for three possible modes, with front axle loads causing very dif-
ferent vehicle stability conditions :
- front-wheel drive alone, in pure diesel mode,
- rear-wheel drive alone, in all-electric mode,
- front and rear-wheel drive, in 4WD mode.
Vehicle stability control, based on :
> dedicated drag torque control regulation (MSR) function to control negative torque
from powertrain,
> trajectory control function, within the limits of grip.