The landmark 50-millionth vehicle was a Peugeot 308, produced at the brand's manufacturing site at Sochaux, France - just one of 24 production sites around the world.
Currently, Peugeot manufactures over 160 individual models for worldwide distribution from the 201 to the 308.
With these historic figures in mind, Peugeot has calculated that more than 1.1 million vehicles emitting less than 120g of CO2/km have been registered by Peugeot in Europe alone since 2001.
The brand has strong commitment to the environment, in the past becoming the first manufacturer to introduce a Diesel Particulate Emission Filter as standard on the 607 in 2000.
It also plans to conduct a major reforestation project in Amazonia which, over a 40 year period, aims to help balance out carbon emissions in the atmosphere.