See also:

Diesel particulate filter system
Complementary to the catalytic converter, this filter makes an active contribution to the preservation of air quality by the retaining of the unburnt pollutant particles. Black exhaust fumes are t ...

Overview
Recognised as one of the best-styled models in its segment, the Citroen C5 has been subtly upgraded. The changes enable the car to keep all its character while making it immediately visible and re ...

Comfort & convenient technology
The new Citroën C4 is designed for business-class travel with intuitive, intelligent technology enabling owners to tailor the new C4's environment and ambience to their own preferences. For e ...