 The Renault Flins factory was renamed in his honor, as well as boulevards in Paris (in the Boulogne-Billancourt area near the Renault Billancourt headquarters) and Le Mans.He is buried at Saint-Quentin-des-Prés, in the Oise Department.Lefaucheux had been arrested by the Gestapo during World War II and was rescued by Marie-Hélène Postel-Vinay whom he subsequently married and by whom he was ultimately survived.