The Flins Renault Factory (also known internally as the Pierre Lefaucheux Factory in memory of Pierre Lefaucheux, Renault's first CEO following nationalisation) is a car factory in France, straddling the towns of Flins and Aubergenville in Yvelines, approximately 40 km from Paris. It is the largest (and, since the closure of the Boulogne-Billancourt factory, the oldest) Renault Group factory in mainland France. It was designed by the architect Bernard Zehrfuss and opened in 1952.