Background
It took a World War to encourage Rolls-Royce to embrace change as a necessity, rather than consider it an evil. By the early 1920’s the winds of change had reached storm force in the Rolls-Royce boardroom. The more chastened circumstances of the times had motivated Henry Royce to design the “Twenty” which was released in 1922 to become the first “small” Rolls-Royce and 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 from a list of time-honoured luminaries. The Twenty had been designed, with its 3.1L straight-six, to easily achieve 60 mph if the factory’s recommendation for a maximum weight of the coach-built body was observed. Rolls-Royce owners loved the Twenty, but they also loved the spaciousness and opulence of a big, hefty body that would look perfectly at home on the huge engined Silver Ghost. Performance of the Twenty inevitably suffered and so, some thought, did the company’s reputation by association.
Rolls-Royce couldn’t sit on their hands, 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, lifting the cubic capacity from 3,128 to 3,675cc and raising the RAC rating to 25.8 hp from 20. This emphatically did the trick and returned order to the Rolls-Royce universe. A 1935 Autocar road test of a closed saloon with a Hooper body (still somewhat bigger than Rolls-Royce recommended and as aerodynamic as a terrace of houses) achieved over 76 mph and accelerated to 60 mph in around 31 seconds.
The Twenty, despite its weight issues, had been a roaring success with 2,940 made and sold. The 20/25, however, was more successful still with 3,827 built during its seven-year production. In fact, that success is credited by many for keeping the iconic Rolls-Royce marque afloat during the financial rigours of the Great Depression.







