With its front mounted supercharger, the 4.5 litre Bentley became the quintessential. British sports car of the 1920 s. & 1930 s. It was shaped from the earlier 4-cylinder 3 litre, but produced substantially more power with its blown engine. As such, it was a stunning road car & a perfect contender for endurance racing. Due to its dramatic appearances at Le Mans & successes in speed trials at the. Brooklands circuit, racing & winning became synonymous with Bentley during this period & few other models capture this image as well as the 4.5 litre Bentley.