Alfa Romeo 24 HP classic cars for sale

History of the Alfa Romeo 24 HP

The Alfa Romeo 24 HP stands as the inaugural automobile developed by what would become Alfa Romeo, emerging from the company originally named ALFA (Anonima Lombarda Fabbrica Automobili), founded in 1910. Conceived by renowned engineer Giuseppe Merosi, the 24 HP departed from earlier Darracq designs, introducing a new Italian approach to luxury and performance. Built at the Portello plant in Milan, production spanned from 1910 to 1913, with further limited units assembled up to 1920. After the First World War, the model was succeeded by the Alfa Romeo 20-30 HP. The 24 HP's importance extends beyond civilian use, as it also served the Italian Royal Army during wartime and laid the foundation for Alfa Romeo’s early truck development in 1914.

Model history

The Alfa Romeo 24 HP, designed as a torpedo body style, became available in Limousine and Corsa configurations soon after its introduction. Its four-year production run saw over 200 units, making it an exclusive automobile of its era. In 1912, technical upgrades included a more powerful engine. The 24 HP was replaced as Alfa Romeo's flagship by the 20-30 HP in 1920, marking a transition point in the brand’s engineering and commercial ambitions. The 24 HP’s engineering DNA influenced subsequent models, particularly in chassis and engine layout.

Highlights of the Alfa Romeo 24 HP

The Alfa Romeo 24 HP distinguished itself through its innovative engineering for the time—particularly the 4-cylinder inline engine with side valves and overhead camshaft, delivering up to 45 hp and a top speed of 100 km/h in its 1912 iteration. The vehicle’s versatility was reflected in its available body styles, serving both civilian passengers in luxury and the military in function. Custom coach-builder options allowed buyers to personalise their car’s finish and features. Its use by the army and role as a developmental base for Alfa Romeo's first commercial truck demonstrate its technical versatility and importance.

Technical data

Special editions

The Alfa Romeo 24 HP was offered in several special versions from the outset. The Corsa variant, designed for motorsport with a lighter build and sportier setup, stands out as an early performance interpretation. Limousine variants targeted luxury travel with enclosed passenger compartments, while the Torpedo body offered classic open-tourer motoring. Custom coachwork by local Italian firms gave some units unique finishes and details, making each car potentially one-of-a-kind.

Weak Spots and Common Issues

Due to its age and limited production, sourcing original mechanical parts—especially for the complex four-cylinder engine, transmission, and chassis—poses a challenge. The wooden-spoke wheels and bespoke coachwork require regular specialist maintenance to remain roadworthy. Many vehicles have undergone extensive restoration, and the originality of mechanical components can be a crucial consideration for collectors.

Engine and Performance, Transmission and Handling

The 4,084 cc engine delivers between 42 and 45 hp, allowing the vehicle to reach up to 100 km/h—a notable speed when compared with other vehicles of its time. The four-speed manual gearbox allows progressive gear changes, but the driving experience is, by modern standards, raw, with mechanical controls requiring skill and familiarity. Large-diameter wooden wheels provide a comfortable ride over uneven surfaces. The Corsa variant’s lighter weight and stiffer suspension provided enhanced responsiveness for motorsport conditions. - Alfa Romeo 24 HP Corsa: lighter construction, sportier setup, designed for competition use.

• Alfa Romeo 24 HP Torpedo: standard open body for touring.
• Alfa Romeo 24 HP Limousine: seven-seater, enclosed for luxury transport.

Interior, Comfort, Exterior and Design

The 24 HP’s design reflects early twentieth-century Italian craftsmanship, with its long bonnet, flowing fenders, and prominent radiator. Interiors could be lavishly appointed depending on the coachbuilder, featuring leather, quality wood, and brass fittings. Colour schemes and accessories were typically determined by the customer and the carrozziere, resulting in a wide variety of finishes. Period-appropriate details include a large steering wheel, exposed gear levers, and hand-crafted trim pieces. Accessories may include period lamps, bespoke toolkits, and unique body details.

Other relevant features

The Alfa Romeo 24 HP’s historical value is amplified by its status as ALFA’s first production model and its dual civilian and military usage. Its chassis served as a base for the company’s first truck in 1914. Surviving cars today are often showcased as part of historic exhibitions or kept in private collections due to their rarity and pioneering technology.

Summary

The Alfa Romeo 24 HP holds a foundational place in Alfa Romeo’s legacy and the evolution of Italian automotive engineering. Its period-correct technical features, multiple body styles, and bespoke coachwork reflect a bespoke approach to motoring that has largely disappeared. For collectors and enthusiasts, it offers not only a glimpse into automotive history but also a tangible connection to the earliest days of one of Italy’s most storied marques.