Background
Between the World Wars times were, inevitably, changing. The hardships and suffering that touched almost all families in some way had worked to shake up the natural order of things. This, combined with a decimated post-war economy and looming depression would put cats amongst pigeons in lots of unexpected places. One such unexpected place was in the boardroom of Rolls-Royce Motors where talk was turning to the introduction of a “small Rolls-Royce.” More and more of the company’s traditional customers were choosing to forgo the services of their chauffeurs and drive themselves. Whatever next! In the face of all these converging factors Henry Royce designed the “Twenty” which was released in 1922 and became an entry level companion to the 40/50 Silver Ghost.
This was a time, of course, where Rolls-Royce would supply just the chassis and running gear leaving customers to appoint a coachbuilder of their own choosing. The Twenty had been designed with a 3.1L straight-six engine which would easily achieve 60 mph if the factory’s recommendation for the maximum weight of the coach-built body was observed. Much like the cats that had got in with the pigeons earlier, Rolls-Royce’s customers were proving as difficult to herd and many were specifying bodywork that wouldn’t have looked out of place on the Silver Ghost. Performance inevitably suffered and so, some thought, did the company’s reputation by association.
That would never do, of course, and so the 20/25 debuted at the 1929 Olympia Motor Show. The 20/25 nomenclature indicated that the chassis from the Twenty was retained but that an enlarged, more powerful engine was now fitted, RAC rated at around 25 hp. The bore of the Twenty’s engine was increased from 3 to 3.25 inches increasing the cubic capacity from 3,128 to 3,675cc and raising the RAC rating to 25.8 hp from 20. This successfully put paid to the performance issues. A 1935 Autocar road test of a closed saloon with a Hooper body (still somewhat bigger than Rolls-Royce recommended) achieved over 76 mph and accelerated to 60 mph in around 31 seconds.
The 20/25 proved to be a great success, so much so that it is credited by many for keeping the iconic Rolls-Royce marque afloat during the rigours of the Great Depression. By the time production ended in 1935 over 3,800 had been built and sold.








