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Technology in the Group
Better integration of cars into the environment
Lower CO emissions
 PSA Peugeot Citroën is leading the way in France for low CO emissions with an average of 140g/km for vehicles sold in 2006. For the second year running, the Group is first in the rankings of the ADEME (French agency for the environment and energy management).
In Europe, in 2006, PSA Peugeot Citroën sold almost one million vehicles emitting less than 140 g CO/km (less than 5.3 l/100 km for diesel vehicles and less than 6 l/100 km for petrol vehicles). Of this total, more than 450,000 vehicles emitted less than 120 g CO/km - giving the Group market share of 38% in Europe in this category - and 200,000 less than 110 g CO/km.
This performance reflects an active policy pursued over a number of years, through which the Group has made CO emissions a key focus of its research and development policy
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Hybrid vehicles
Technologies developed by PSA Peugeot Citroën are already available on several vehicles. One example is Stop & Start (STT), which ships with the Citroën C2, C3, etc. This system, which cuts the engine and starts it up again in a fraction of a second, is a first level of hybridisation. The resulting fuel savings and cuts in CO emissions vary between 8% and 15% in the city.
The Group is also pursuing its research into cutting CO emissions with the hybrid HDi. This technology is based on an HDi 1.6 l diesel engine fitted with a particulate filter (DPFS) and a new-generation Stop & Start system, along with an electric motor, power inverter, high-voltage batteries and dedicated control electronics. An automated manual gearbox provides transmission. The Peugeot 307 and Citroën C4 hybrid HDi, unveiled in early 2006, thus consume just 3.4 l/100 km of diesel fuel for CO emissions of 90 g/km. These figures can be considered as a real breakthrough. PSA Peugeot Citroën will bring hybrid HDi vehicles to market from 2010.
Diesel Particulate Filter System (DPFS)
 The diesel particulate filter system (DPFS) is a self-cleaning device that destroys almost all the particles emitted by diesel engines. A world first launched in 2000 on the Peugeot 607, the DPFS is now widely available across the Peugeot and Citroën ranges. Today, almost 1.9 million vehicles in Europe are fitted with this system. This initial technological choice also provides strong compatibility with biofuels.
From 2009, future European directives on particle emissions will make the DPFS obligatory.
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