 Peugeot replaced the 605 executive saloon with the 607 while the 406 receives a facelift in the Spring.Peugeot also launches the world's first mass production diesel particulate filter system used in the 2.2 HDi unit for the Peugeot 607.This system became mandatory for Euro 5 emission standards in 2009 for all diesel engines sold, in a mass production car.