The Renault 5 was styled by Michel Boué, who designed the car in his spare time, outside of his normal duties. When Renault executives learned of Boué's work, they were so impressed by his concept they immediately authorized a formal development programme. The R5 featured a steeply sloping rear hatchback. Boué had wanted the tail-lights to go all the way up from the bumper into the C-pillar, in the fashion of the much later Fiat Punto and Volvo 850 estate / wagon, but the lights remained at a more conventional level.