Bugatti produced approximately 6,000 vehicles at its Molsheim factory and many of them were touring cars of sporting character, however, the company is best remembered for its racing models. They were among the most successful and competitive manufacturers during their era, building an enviable reputation during its barely three decades of production, from the first Type 13 until the cessation of production at the onset of the Second World War. They built an almost endless stream of models that were meticulously crafted from the finest materials by the most skilled artisans.
Among Bugatti's most elegant, luxurious, and imposing models was the Type 46, which was introduced in late 1929 and produced through 1933 with approximately 450 built during that time. The steel ladder-type chassis had a 138-inch (3,505 mm) wheelbase which it shared with the Type 50, along with its radiator and transaxle assemblies. The suspension employed semi-elliptic leaf springs at the front and inverted quarter-elliptic leaf springs at the rear. At all four corners were self-adjusting cable-operated brakes with 16-inch drums. The single overhead camshaft eight-cylinder engine had three valves per cylinder, twin spark plugs per cylinder, displaced 5,359cc, and developed 140 horsepower. Like most Bugatti engine designs, it was undersquare with an 81mm bore and 130mm stroke. The three-speed manual gearbox was mounted within a rear-transaxle unit. The early examples of the T46 rode on wire-spoke wheels, while vane-type 'Royale-style' alloy wheels were fitted to the later cars.
Bugatti added a Roots-Type supercharger to the Type 46 in 1930, creating the Type 46S and boosting output to 160 horsepower. A total of 18 examples with the supercharger were built.
The Type 46 is often regarded as the 'Petit Royale,' so-named for its resemblance to the Type 41 Royale, which had an impressive 4.3-meter wheelbase and 12.8-liter engine. Approximately 40 different custom coachbuilders created coachwork for the Type 46 chassis in a variety of designs and specifications. At its core, the sophisticated chassis and potent powerplant provided rapid acceleration while maintaining a comfortable ride expected from a refined touring car. However, with the gearbox built in unit with the live rear axle, it did suffer from high unsprung weight which affected ride quality.
Bugatti models built during this era included the Type 49, Type 57, Type 41 Royale, Type 51, and Type 55. The Type 49 was an enclosed touring car produced from 1930 to 1934, with approximately 470 units built during that time. The straight-8 engine displaced 3.3 liters. The Type 57 that followed the Type 49 was also a grand touring automobile, built from 1934 to 1940, rested on a 130-inch wheelbase, and was powered by a 3.3-liter straight-8 engine from the Type 59 Grand Prix cars. The Type 55 had a 108.3-inch wheelbase and was the road-going version of the Type 51 Grand Prix car. Built from 1931 to 1935, just 38 examples were built. The Type 51 was the successor to the Type 35 and its engine was an evolution of the 2.3-liter supercharged straight-8 powering the Type 35B. Approximately 40 examples of the Type 51 and 51A were produced.
Within the Bugatti hierarchy, the Type 46 had an eight-inch longer wheelbase than the Type 57 and its 5.4-liter engine was larger and more powerful than the 3.3-liter unit powering the Type 57. Both were enclosed touring cars and were below the Type 41 Royale, which rested on a massive 169.3-inch wheelbase and was powered by a 12.8-liter straight-8. Just six examples of the Bugatti Royale were built. While the Type 41 Royale was the most opulent automobile on the road, the Type 35 racers reigned supreme in the motoring world, dominating at every level of motorsports. Between these two extremes was the Type 46, combining performance with refined comfort and ease of operation and offered with a wide variety of custom coachwork.
by Dan Vaughan