Background
PLEASE NOTE THAT AN AUCTION PREMIUM WILL BE CHARGED, ON TOP OF THE HAMMER PRICE, OF 5% (+VAT IN THE UK AND EUROPE). FROM 16TH JAN'23 THIS APPLIES TO ALL AUCTIONS ON THE MARKET, AND FEES ARE CAPPED AT £5,000 (+VAT)
The BMW Isetta ‘bubble car’ was the world’s best-selling single-cylinder car, selling 161,728 examples between 1953 and 1961. Is that important? Well, yes because you only get that popular by being bloomin’ good at what you do and the Isetta is a masterclass in how to package a car on a Lilliputian scale.
Built initially by Iso SpA, a company better known at the time for its refrigerators, motor scooters and three-wheeled trucks, the Isetta’s name is the Italian diminutive of Iso, so means ‘little Iso’.
Which is appropriate for a car that’s only 7.5 feet long. Wonderfully, the front of the car is one big door, allowing the driver and passenger to back in while maintaining a modicum of decorum. Mind you, the large glass windows do rather expose you to public gaze but the corollary of that is that’s its wonderfully light and airy in there.
A 236cc two-stroke motorcycle engine provided 9.5bhp of motive power and a chain connects the gearbox to the rear axle. Despite your initial thoughts, there are two rear wheels on the original, albeit spaced only 18.9” apart to avoid the need for a rear differential.
Performance is glacial. The top speed was rumoured to be 47mph although more people have probably walked on the moon than have experienced it. A better measure of its va-va-vooom is the 30 seconds it takes to reach 31mph, a sensible city speed and the environment in which it flourishes.
Mind you, Iso did enter several Isettas into the Mille Miglia, where they took all three podium places in the economy category; this means there is no cheaper way of buying a bona fide Mille Miglia car…
Built on licence by BMW, the car you see here is a very different model from the Italian original. So much so, in fact, that nothing is interchangeable between it and the Italian original. Designed around the BMW four-stroke 247cc motorcycle engine, the re-engineered car pumps out a mighty 12bhp via a single rear wheel, for example.
It gets better. German tax law changed in 1956, allowing an increase in engine size to a frankly ridiculous 300cc. This 298cc monster churns out an unfathomable 13bhp. The top speed rose to a heady 53mph while the 13.6lb ft of torque endowed the Isetta with hitherto unknown levels of flexibility.







