De Dion-Bouton Type D

Engineers Albert de Dion and Georges Bouton had already revolutionized the industry with their 1893 single-cylinder engines and 1898 rear-axle engines. The Type D arrived at the turn of the century as their first standardized production passenger model, following the success of their voiturette tricycles. Sold primarily to Parisian doctors and merchants, it marked De Dion-Bouton’s transition from specialist builder to genuine car manufacturer.

A compact two-seat tonneau on a simple ladder frame, the Type D used a 402 cc single-cylinder four-stroke delivering roughly 3.5 hp. The engine was placed transversely ahead of the rear axle, driving through a single chain to a live rear axle. Ignition was by hot tube, fuel feed via wick carburettor, and braking was handled solely by a hand-lever on the rear wheels. The bodywork was lightweight timber framing skinned with steel over a leather-upholstered bench.

Though only produced for a few short years, the Type D proved that affordable, competent petrol cars could be turned out in numbers rather than built one at a time. Around 250 were made, many surviving thanks to robust engineering and the subsequent formation of societies like the Veteran Car Club of France. Today it remains a sought-after artifact at London-to-Brighton and similar veteran rallies, representing the bridge between experimental prototypes and mass-market motoring.