A microcar is a particularly and extremely small automobile. Various definitions are used, including "less than 3 M in length" and "less than 85 ft³/2400 L interior volume". Typically, microcars seat only the driver and a single passenger, and many have only three wheels. Microcars are usually designed and produced for economic purposes when materials are scarce and/or fuel is scarce and expensive. Many microcar designs flourished in post-World War IIGermany, where former military aircraft manufacturers such as Messerschmitt and France also produced large numbers of similar tiny vehicles called voiturettes, but unlike the German makes, these were rarely sold abroad.
Very small cars have also been popular in Japan, where again they attract various tax and insurance benefits when compared to other vehicles. These are known as keicars and differ from most of the European microcars in that they are typically designed and built as scaled-down versions of very traditional car configurations, while European microcar designs tend to be unorthodox and sometimes bizarre.
The smart car launched in 1998 could be seen as a successful re_invention of the microcar principle. Like the Japanese keicars, it is of relatively conventional design.
The economy of operating such a small car was often contributed to by the fact that three-wheeled microcars were treated as motorcycles for tax and insurance purposes in many places.
These are known as keicars and differ from most of the European microcars in that they are typically designed and built as scaled-down versions of very traditional car configurations, while European microcar designs tend to be unorthodox and sometimes bizarre.
The smartcar launched in 1998 could be seen as a successful re-invention of the microcar principle.