BMW Isetta 300 Microcar

BMW Isetta 300 Microcar

The BMW Isetta 300, produced from 1956 to 1962, was one of the most unusual and charming vehicles BMW ever built — a tiny, egg-shaped microcar with a front-opening door that helped save the company from financial collapse in the difficult years following World War II. While the Isetta was originally an Italian design by Iso SpA, BMW acquired the license and re-engineered the car with German precision, creating a microcar that became a cultural icon.

The Isetta's most distinctive feature was its front-opening door. The entire front of the car — including the windshield, steering column, and instrument panel — swung outward on a hinge located on the right side of the vehicle. The steering column and wheel moved with the door, providing easy access to the interior despite the car's tiny dimensions. This unconventional layout required drivers to enter the vehicle by stepping through the front, a process that became second nature to Isetta owners but never failed to amuse onlookers.

The BMW-designed 298cc single-cylinder four-stroke engine, mounted at the rear, produced 13 horsepower — adequate for the Isetta's featherweight 350 kg curb weight. The engine was derived from BMW motorcycle powerplants and featured the same quality of engineering. It ran quietly and reliably, delivering surprisingly peppy performance given its modest output. The four-speed manual transmission lacked synchromesh but featured a chain drive to the single rear wheel, resulting in a mechanically simple and robust drivetrain.

The Isetta's handling was unusual but not unpleasant. The front track was conventionally wide at 1,380 mm, but the rear featured a single wheel positioned centrally, creating a three-wheel configuration that was legally classified as a motorcycle in some markets. This arrangement provided adequate stability while simplifying the drivetrain and reducing manufacturing costs. The suspension used Dubonnet independent front suspension — an unusual system featuring coil springs inside tubular arms — that provided a surprisingly comfortable ride.

Fuel economy was extraordinary, with the Isetta capable of achieving 3.0 liters per 100 km (78 mpg) in gentle driving. This made it an ideal vehicle for post-war Europe, where fuel was expensive and economic conditions meant that most families could not afford conventional automobiles. The Isetta provided weather-protected, reliable transportation for one or two adults and limited luggage, fulfilling a crucial role in motorizing Europe during the 1950s.

The interior was minimalist but functional. Two adults could sit side-by-side on a bench seat, though the interior was cozy at best. A small parcel shelf behind the seat provided limited storage. The instrumentation was basic — speedometer, fuel gauge, and warning lights — but adequate. Heating came from engine heat ducted into the cabin, while the large front window provided excellent forward visibility.

BMW produced 161,728 Isettas during the model's production run, making it one of BMW's highest-volume products of the 1950s. The Isetta's profits helped fund development of the 'New Class' sedans that would establish BMW's modern identity as a maker of sporting sedans. Today, the Isetta is recognized as a charming automotive curiosity and an important piece of BMW history — the car that kept the company alive long enough to create the vehicles that made it famous.