About the BMW Isetta
The BMW Isetta was produced under licence by BMW from 1955 to 1962, becoming one of the most successful microcars of the post-war era. Distinguished by its front-opening door and three-wheel design (four wheels on later UK models), the Isetta featured a 298cc single-cylinder engine producing 13bhp, later upgraded to a 297cc and 298cc unit. UK models from 1959 onwards used a four-wheel configuration to comply with taxation laws. The car could accommodate two adults and achieved around 50-60mpg, making it economical transport during fuel rationing periods. Most UK examples were right-hand drive, with the 300 model being the most common variant found today.
What Affects the Price of a Used BMW Isetta
Condition is the primary price determinant, with fully restored examples commanding £35,000-£55,000, while unrestored but complete cars sell for £15,000-£25,000. Project cars requiring significant work start around £8,000-£12,000. Originality significantly impacts value—matching numbers engines, period-correct colours, and original interior trim add substantial premiums. UK right-hand drive models typically achieve 10-15% more than imported left-hand drive versions. The 300 Export model with sliding side windows is more desirable than the fixed-window standard variant. Documentation including period registration papers, previous restoration receipts, and continuous history files can add £3,000-£5,000 to values. Rarity also plays a role, with bubble-window convertibles and two-tone paint schemes fetching premium prices. Mileage is less critical than condition due to the car's age.
BMW Isetta Buying Tips
Inspect the chassis thoroughly for rust, particularly around the outriggers, rear suspension mounts, and floor panels—restoration costs can exceed £10,000 for serious corrosion. Check the front door opening mechanism operates smoothly and seals properly, as replacement parts are expensive and hard to source. Examine the engine for oil leaks and smoky exhaust; while relatively simple, specialist knowledge is required for rebuilds. Verify the electrical system functions correctly as original wiring harnesses deteriorate and sourcing correct components is challenging. Check all glass including the distinctive curved windscreen, which is costly to replace if cracked. Join the Isetta Owners Club UK before purchasing for access to specialist knowledge and parts suppliers. Request a thorough history file and verification of any restoration work undertaken. Consider storage and maintenance costs—these cars require dry, secure storage and access to specialists familiar with 1950s BMW engineering. Budget for annual maintenance of £500-£800 even for well-sorted examples.