The BMW Isetta has a fascinating origin, stemming from an Italian design by Iso Autoveicoli SpA. When BMW took over the license in 1954, they completely redesigned the mechanicals for better reliability and performance. The resulting BMW Isetta quickly became a huge success story. This economical car provided essential personal transportation during Europe’s post-war recovery. The little Isetta holds the title of the best-selling single-cylinder car of all time.
BMW’s Ingenious Engineering Solution
While retaining the appealing egg-shaped body and signature front-opening door, BMW made crucial technical changes. They swapped the original motor for their own motorcycle engine. This move immediately integrated the Isetta into BMW’s existing parts and service network. The engine’s simplicity and reliability were ideal for daily driving.
Engine Upgrades and Drivetrain Details
The 1957 model year benefits from the enlarged 298-cc single-cylinder engine. This improvement followed German legislative changes in 1956. The slightly larger engine provided a modest but necessary boost in power. It is mated to a four-speed motorcycle gearbox. This setup ensures that the little microcar provides the best possible performance from its small engine.
Charm and Restoration Quality
This specific 1957 BMW Isetta 300 is finished in a charming, period-correct two-tone blue and white exterior. The car underwent a comprehensive restoration, which was completed in 2004. Invoices on file confirm the thousands of dollars invested to return the vehicle to superb condition. The car has a gray soft-folding sunroof, perfect for open-air enjoyment.
Longevity and Recent Service History
Now two decades after its restoration, the Isetta still shows wonderfully. This longevity speaks to the quality of the earlier work performed. In 2025, the car received a thorough service totaling just over $5,200. This recent work focused on critical systems like the brake system, ignition components, and all necessary lubricants.
Performance Specifications and Road Use
The 298-cc single-cylinder engine is the most powerful version fitted to the Isetta. This motorcycle-derived engine is lightweight and durable. It delivers adequate power for urban and short-distance travel. The four-speed manual gearbox gives the driver control over the power band. The light weight and nimble handling ensure it is an absolute joy on smaller roads.
The 1957 BMW Isetta 300 represents a unique slice of automotive history and design innovation. As a lovely, well-maintained example, it showcases the Isetta’s unique charm and simplicity. With its later 298-cc engine and recent extensive servicing, this microcar is ready to delight its next owner and enhance any collection.
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Source: rmsothebys.com
