Alfa Romeo 15-20 HP Classic Cars for Sale

History and Origins of the Alfa Romeo 15-20 HP

The Alfa Romeo 15-20 HP emerged as a development of the earlier 15 HP, crafted under the guidance of Giuseppe Merosi. Introduced in 1914, it retained the 2,413 cc inline four-cylinder engine but benefited from increased power output—up to 28 hp—and a slightly wider track. Notably, this model’s narrative intersects with the tumultuous period of the First World War, which halted production as the Portello factory pivoted to military manufacturing under new ownership by Nicola Romeo. Production resumed only briefly after the war, before the car was replaced in 1920 by the more advanced 20-30 HP. In its short lifespan, just 180 units were assembled, making surviving examples extremely uncommon.

Model History: Predecessors and Successors

The 15-20 HP is a direct successor to the Alfa 15 HP and built upon its technical base. The 15-20 HP was available as either a torpedo or berlina variant, providing a choice between open and closed bodywork typical for the era. After a brief postwar production period, it was replaced by the Alfa Romeo 20-30 HP in 1920, which was the first car to bear the new Alfa Romeo name, marking a key transition in the brand's development.

Highlights and Unique Features

Among its notable features are the front-mounted 2,413 cc engine, rear-wheel drive, and a three-speed manual gearbox, enabling a top speed of 100 km/h—a remarkable figure for its time. Track width increased by 50 mm over its predecessor to improve stability, and both torpedo and berlina body styles were offered. The retail price increased sharply after WWI due to inflation and scarcity, reflecting the model's period-specific context.

Regarding statistics, the Alfa Romeo 15-20 HP accounts for only a minuscule percentage of Alfa Romeo classic cars listed or viewed, highlighting its immense rarity compared to both other Alfa Romeo models and within its own model series.

Technical Data

Special Editions and Collectible Models

The Alfa Romeo 15-20 HP was available in two main body styles: torpedo (open) and berlina (closed). Both variants are sought after due to their historic significance and low production numbers. No factory ‘special editions’ were recorded, but surviving examples with original features or unique coachwork commissions are especially noteworthy.

Weak Spots and Common Issues

Due to a lack of contemporary documentation, specific weak spots of the Alfa Romeo 15-20 HP are not well documented. However, as with most pre-war vehicles, wear on mechanical components like the gearbox, differential, and engine—especially if maintenance has not been meticulous—should be anticipated. Replacement parts are exceedingly scarce, so originality and service records are crucial factors when considering a purchase.

Engine, Performance, Transmission and Handling

The 2,413 cc four-cylinder engine and improved track width provided enhanced performance compared to earlier Alfa models. Rear-wheel drive and a three-speed gearbox offered functional and responsive handling for the pre-war era. Top speed was rated at 100 km/h. The car was intended for both comfortable touring and practical transport, which was reflected in its balanced handling and robust construction. The torpedo body style appealed to owners seeking open-top motoring, while the berlina variant provided comfort with closed cabin protection—technical attributes such as wider track and increased power distinguish the 15-20 HP from its direct predecessor, the 15 HP.

Interior, Comfort, Exterior and Design

Coachwork was typically crafted by specialist Italian carrozzerie of the 1910s, allowing each example to feature unique styling cues, trims, and materials. Typical period features included leather upholstery, wooden steering wheels, and external running boards. While special accessory packages are undocumented, some surviving vehicles feature bespoke details or finishings reflecting the tastes or requirements of their original owners. The torpedo variant frequently included foldable windshields and detachable side screens for weather protection.

Other Noteworthy Features

The Alfa Romeo 15-20 HP’s story encapsulates the birth of the Alfa Romeo brand as it transitioned away from pre-war models and entered the postwar Italian automotive scene—a pivotal moment for the marque’s future direction. Its low production run and survival rate make every example a testament to the resilience of early Italian craftsmanship.

Summary

The Alfa Romeo 15-20 HP sits at a crossroads in the history of both its marque and its era, reflecting advances in engineering and design at the dawn of the twentieth century. Its rarity is tangible, owing to just 180 units built, split between the practical berlina and elegant torpedo configurations. Every example stands as a relic of pioneering Milanese motoring and offers a fascinating glimpse into the roots of Alfa Romeo’s enduring automotive heritage.