1961 Isetta
La Dolce Dundee: Spirit, Style, & Italian Spirit
Technically, you are looking at a German vehicle. By 1955—just two years after its introduction—Iso SpA had ceased production of the Isetta in Italy. By 1954 the design had already been licensed to manufacturers around the world. Whether produced in Germany, in the UK by Isetta of Great Britian, in Brazil as the Romi-Isetta, in Argentina as the De Carolo-Isetta, or in France as the slightly redesigned Velam, its Italian origins are unmistakable. This playful yet stylish bubble car remained largely unchanged throughout its production life, with each manufacturer preserving the undeniable Italian character of the Isetta.
Dates
1939 – Isothermos founded by industrialist Renzo Rivolta in Milan, Italy.
1950 – Isothermos introduces scooters and motorcycles under Isomotos.
1953 – Iso Autoveicoli SpA founded.
1953 – The Iso Isetta introduced at the Turin Motor Show.
October 1954 – BMW acquires the license from Iso SpA to produce the Isetta in Germany.
1954 – Velam-Isetta (France), Romi-Isetta (Brazil), Isetta of Great Britain (UK), Iso Motor Italia (Spain) also acquire license to produce the Isetta.
1955 – Iso SpA stops production of Isettas in Italy.
April 1955 – BMW introduces Isetta 250 with a BMW motorcycle engine.
1956 – BMW introduces the Isetta 300 with a larger 298cc engine.
1958 - production of Isetta by Iso Motor Italia S.A. (Madrid) ends.
1961 – production of the Romi Isetta (Brazilian company) ends.
May 1962 – production of BMW Iestta 300 ends.
1964 – Isetta of Great Britian production ends.
origins
Isothermos was founded in 1939 by Renzo Rivolta (1908–1966). The company initially found success manufacturing refrigerators and other household appliances.
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After the Second World War, much of Europe faced severe economic hardship. For many families, owning a car was simply unaffordable. Always an astute entrepreneur, Rivolta recognised the growing demand for inexpensive personal transport. In 1950, Iso introduced the Isoscooter, followed shortly by a range of motorcycles sold under the name Isomoto.
By the mid-1950s, Italy was beginning to rebuild and entered a period of rapid economic growth known as the Il Miracolo Economico (the Economic Miracle). Although mass car ownership remained out of reach for most Italians, there was an increasing desire for affordable, enclosed transport that offered more comfort and protection than a scooter. This was the moment the microcar emerged — and the opportunity Rivolta recognised: a vehicle that could bridge the gap between a scooter and a conventional car, providing greater comfort while remaining economical.
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Enter Ermenegildo Preti (1901–1986), the engineer behind the radical design of the Isetta. Preti had previously designed gliders, many of which featured front-opening cockpits — a concept that influenced the Isetta’s distinctive front-opening door. Rivolta and Preti unveiled the Isetta at the 1953 Turin Motor Show, where it caused a sensation. Nothing like it had been seen before. Its design was innovative, practical, and perfectly suited to life in Italy’s crowded cities.
The Isetta never truly took off in Italy. It occupied an awkward position in the marketplace: Vespas and Lambrettas were far cheaper, while the Fiat Topolino — the precursor to the Fiat 500 — was not much more expensive and offered the comfort and practicality of a conventional car.
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The Isetta also struggled to compete with the strong cultural appeal of scooters in Italy. Although its design was revolutionary, its unusual, bubble-like shape divided opinion and did not appeal to everyone.
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To recover its development costs, Iso decided to license the Isetta’s design to other manufacturers. In 1954, BMW purchased the rights.
At the time, BMW was in serious financial difficulty. During the Second World War, the company had shifted from producing consumer goods to manufacturing aircraft engines and other military equipment. After the war, German firms that had supported the war effort were prohibited from producing arms, yet many were left with factories designed for military production. Compounding the problem, much of BMW’s pre-war manufacturing capacity was now located in East Germany, beyond the company’s control.
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The remaining West German operation needed to reinvent itself — and quickly. BMW initially focused on large, expensive saloon cars such as the 501, but these were costly and fuel-hungry at a time when few customers could afford them. The company urgently needed an affordable, high-volume model.
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After one BMW executive saw the Isetta at a motor show, the idea of producing it under licence was proposed. The decision proved pivotal. The Isetta became one of the most important vehicles in BMW’s history, generating much-needed sales and helping to pull the company back from the brink of bankruptcy.
design
The original Iso Isettas were powered by an Iso-designed, air-cooled, two-stroke “split-single” engine with a capacity of 236 cc. A split-single engine is a type of two-stroke engine that uses two pistons sharing one combustion chamber, with separate cylinders for intake and exhaust. This unusual 20th-century design offered some of the smoothness and efficiency of a twin-cylinder engine, while reducing the energy losses caused by the inefficient gas flow typical of traditional two-stroke engines. This compact and efficient engine was well suited to the Isetta, a small vehicle that sat somewhere between a motorcycle and a car.
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When BMW began producing the Isetta, the company replaced the two-stroke engine with a more conventional four-stroke design. In April 1955, BMW launched the BMW Isetta 250, powered by a four-stroke, single-cylinder engine adapted from the BMW R25 motorcycle. In 1956, BMW further developed the model by introducing the Isetta 300, which featured a larger 298 cc four-stroke engine.
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This upgrade responded to customer feedback: while the Isetta performed well in cities and with a single occupant, the smaller engine struggled to keep pace with traffic, particularly when carrying two passengers.
One of the Isetta’s most distinctive design elements is its single, front-opening door. The car is almost as wide as it is long, making it ideal for the narrow, crowded streets of Italy. Drivers could park facing the pavement, open the front door, and step straight out.
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This unusual layout raised a key design challenge: where could the steering wheel be placed without blocking the driver’s exit? The solution was a unique steering column fitted with a small universal joint at its base. This allowed the steering wheel to move outward with the door, clearing space for the driver as the door opened.
impact
The Isetta is a symbol of post-war recovery and Italian ingenuity. In the years following the war, both Italy and Germany needed affordable, practical transport to get people moving again. But in Italy, functionality alone was never enough — style mattered too. The Isetta’s bold, unconventional design challenged traditional ideas of what a car should look like. In Italy, it has always been about more than simple transportation; it is an expression of identity, creativity, and unmistakable Italian style.
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Much like the Isetta emerged from Italy’s Miracolo Economico, the BMW also embodied Germany’s Wirtschaftswunder (economic miracle). For many people, the Isetta was their very first car, marking an important step up from two wheels to four and making car ownership attainable for the first time.
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The BMW Isetta was a remarkable success. With 161,728 examples sold, it became the best-selling single-cylinder-engined car of its time and a defining symbol of post-war recovery. Crucially, its commercial success provided BMW with the financial stability to expand its microcar range with the 600 and 700 models, and ultimately to develop the hugely successful mid-size “Neue Klasse” series — including the BMW 1500 and 1600 launched in 1962.
