W.O. Bentley's answer to the demand for a car of bigger dimensions especially capable to carry heavy coachwork without significant loss of acceleration and top speed was unveiled in 1926 in the form of the Bentley 6 1/2 Litre. Its six cylinder engine with four valves per cylinder was so powerful that it met diversity of requirements. No longer suffered cars with formal heavy coachwork from lack of performance whereas lighter cars with open tourer bodies were employed on race courses with outstanding success. Introduction in October 1928 of the Bentley Speed Six was logical step to provide customers with a contender for motor sport events.

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