9. Bentley Speed Six
The Speed Six was a sports and luxury car, and was produced between the years 1926 and 1930.
But the Bentley Speed Six introduced in 1928, would become the most successful racing Bentley at that time.
And that’s because by 1924, the company decided to build a larger chassis than the 3 Litre, with a smoother, more powerful engine.
The Bentley Speed Six was introduced as a more sporting version of the Bentley 6½ Litre, and came with an engine that produced 180 hp at 3500 rpm.
While the racing version of the Speed Six had an engine that produced 200 hp and was very successful in racing, winning the 24 Hours of Le Mans in 1929 and 1930.