Rolls-Royce Twenty / 20/25 / 25/30 20/25 Tourer
The Rolls-Royce Twenty, introduced in 1922, and its successors the 20/25 (1929-1936) and 25/30 (1936-1938), represent one of the most important model families in the marque's history. These 'Small Horsepower' Rolls-Royces were conceived by Sir Henry Royce himself as a more practical alternative to the large and expensive 40/50 HP Silver Ghost and its successor, the Phantom.
The Twenty was revolutionary for Rolls-Royce: a smaller, lighter, more economical car that could be driven by its owner without the need for a chauffeur. Its 3.1-litre overhead-valve straight-six engine was smooth and refined, if not particularly powerful, and the car could be comfortably managed in tight city streets where the enormous Phantom was impractical.
The 20/25, which replaced the Twenty in 1929, was a significant improvement. Its engine was enlarged to 3.7 litres, and the chassis was refined with improved brakes, better suspension, and more modern coachwork proportions. The 20/25 became the most popular pre-war Rolls-Royce, with 3,827 built. It attracted a class of buyer who appreciated Rolls-Royce quality but needed a car suitable for everyday use.
The 25/30, which succeeded the 20/25 in 1936, featured a further-enlarged engine of 4.3 litres and improved performance. It was produced in smaller numbers — just 1,201 — before being replaced by the Wraith in 1938.
All three models were sold as rolling chassis, with coachwork supplied by the customer's chosen coachbuilder. The variety of body styles was enormous: formal limousines, sporting tourers, elegant saloons, drophead coupes, and all-weather tourers were among the styles offered by dozens of coachbuilders including Barker, Thrupp & Maberly, Park Ward, and Hooper.
The Small Horsepower Rolls-Royces are particularly valued by the vintage car community because they combine genuine Rolls-Royce quality with manageable size and performance. They are popular choices for vintage rallies and tours, being reliable, well-supported by specialist parts suppliers, and enjoyable to drive on modern roads.
With combined production of over 7,000 units across the three models, these are among the most accessible pre-war Rolls-Royces for collectors, though the finest coachbuilt examples with sporting bodywork command substantial prices.
Body condition is the primary concern — these cars are 85-100 years old and coachwork condition varies enormously. Ash body frames can be extensively rotten while looking presentable externally. Examine structural timbers carefully. The mechanical components are well-understood and supported by specialist suppliers including the Rolls-Royce Enthusiasts' Club spare parts service. Engine rebuilds are straightforward for specialists. Check for correct matching of chassis, engine, and coachwork — many cars have been rebodied over the decades. The 20/25 is the most popular and best-supported model. Pre-war cars require sympathetic maintenance and regular use to remain reliable. Storage damage is common — check for seized brakes, corroded cylinders, and perished rubber components.
Twenty (1922-1929): 2,940 built, 3.1L engine. 20/25 (1929-1936): 3,827 built, 3.7L engine. 25/30 (1936-1938): 1,201 built, 4.3L engine. All sold as rolling chassis. Built at Derby factory. Combined production approximately 7,025 units.