This French icon, designed by Flaminio Bertoni, caused a sensation at the 1955 Salon de Paris. Before being placed under a smooth glass canopy in mid-1967, the four headlights were already available on the Pallas trim level, released in 1964. This DS 21 was equipped with the new 2.2-litre engine launched in late 1965. The green colour (Monte Carlo Blue) was only offered on the 1967 model year.