The Type 50 was a sporting coupe version of the Type 46. It rode on a shorter wheelbase, 122 in (3099 mm), and used a smaller 5.0 L (4972 cc/303 in³)
version of the engine.
This engine had squarer dimensions, however, at 86 by 107 mm, and twin camshafts actuated two valves per cylinder.
Power output was impressive at 225 hp (167 kW).
Many cars had landaulet roofs and Bugatti style two-tone paint.
The Type 50 Touring was a sedan version of the Type 50. It used the same 138 in (3505 mm) wheelbase as its predecessor, the Type 46, but shared the 5.0 L engine of the Type 50. The engine was tuned for torque, though, with just 200 hp (149 kW) on tap. In total, 65 Type 50 and Type 50T Bugattis were produced between 1930 and 1934.
A racing version, the Type 50B, was also produced. It shared the 5.0 L 2-valve engine but was blown to produce 470 hp (350 kW). It was used from 1937 through 1939. A pair of these engines were installed in the Bugatti P100 airplane, with specially cast magnesium crankcases.
A racing Le-Mans version, the Type 50S, was also produced, three examples were prepared for the 1931 24 Hours of Le Mans race .
It also shared the 5.0 L 2 valves / cylinder, DOHC engine, fed by 2 Zenith Carburettors, using a Roots-Type Supercharger producing 270 bhp (201 kW), giving the Type 50S a top speed of 200 km/h (124 mph)
For the first time Bugatti had a car with a large enough engine to take on the Bentleys or 'British lorries' as Ettore referred to them. Painted in all black to show Bugatti's discontent with the French government's refusal to sponsor the racing effort.
The Type 50S racers were all withdrawn after a tire failure on one of the team cars. One of those 24 Hour racers returned to Le Mans three more times, and even led the race for a while in the 1935 running.