Super rare, European 3-litre, Carburettor Automatic example Believed 1 of just 20 such cars built The ultimate 70s French GT car Recent mechanical upgrades and service Full tobacco leather interior An undervalued icon "The SM is neither a sports car nor a luxury limousine, not a prototype for proving a new concept of driving security for tomorrow. But it does combine all three of these concepts into one compete entity." – Citroën. Combining Citröen's advanced chassis technology and Maserati's engine know-how, the SM featured DS-style hydro-pneumatic self-levelling suspension, power-assisted all-round disc brakes, self-centring steering, and steered headlamps. Maserati was responsible for the 90-degree V6 engine, and after some juggling of bore/stroke dimensions, a capacity of 2,670cc was settled on for a power output of 170bhp to fall within the 15CV taxation band. Citröen was the world leader in passenger car aerodynamics at the time, the SM's class-leading drag coefficient enabling it to reach 140mph (225km/h), making it the fastest front-wheel-drive car ever at that time. Robert Opron was the man responsible for styling the SM. He had managed to persuade the Citroën management that it would be a good idea to have a prestige Gran Turismo at the top of the range. His portfolio while at Citroën would include overseeing the GS and CX ranges, as well as face-lifting the immortal DS. Fuel injection arrived in 1972; an automatic transmission option became available the following year; and the engine was enlarged to 2,974cc before the model was prematurely axed in 1975 following Citröen's acquisition by Peugeot, by which time a total of 12,920 had been produced. Fondly remembered, these technically advanced and functionally beautiful cars remain highly sought after today. Now available for viewing at the DD Classics Dealership in London, please call 0208 878 33 55 to book an appointment. Every effort has been made to ensure the accuracy of the above information but errors may occur.