
With rare exceptions, most cars on sale today have engines with capacities of between 1.0 and 8.0 liters. In the past, the range was much wider.
Before the First World War, American manufacturers Peerless and Pierce-Arrow both produced cars with engines measuring 13.5 liters. Other classic cars have been powered by motors which make the 875cc TwinAir unit in current Fiat models look simply enormous.

In this feature we’re considering cars in the latter group. All of them were designed before the 21st century and had engines of less than 650cc, and we’re presenting them in descending order of capacity.
Let explore 38 small classic cars that made a big impact despite their diminutive size. These cars, designed before the 21st century, had engines with capacities of less than 650cc. Here are some fascinating Examples:-

- Fiat (600cc): Fiat’s small car after world war ll, the 600 featured a four-cylinder water-cooled engine. The smallest version had a tiny 633cc engine. It remained in production from 1955 to 1969.
- Renault 3 (603cc): A simple version of the Renault 4, the Renault 3 shared its Billancourt engine with the Renault 4CV. The narrower bore reduced it capacity to 603cc.
- Citroen LN (602cc): Mechanically similar to the Citroen 2CV, the Ami 6 was larger and heavier. It featured an expanded 602cc version of the 2CV’s air-cooled flat-twin engine.

- Citroen LN (602cc): The LN essentially a three- door Peugeot 104 hatchback, sported Citroen’s 602cc twin-cylinder engine Although short-lived, it paved the way for the LNA, which came with more modern engine options.
- Citroen Mehari (602cc): The Mehari, an open-topped utility vehicle, shared its engine with he 2CV, Ami, and saloons. The 602cc until was the sole engine offered in the Mehari.
- Smart (599cc): The smart car, Known for its compact size and urban agility, featured a 599cc engine. Despite its Diminutive proportions, the smart became a popular choice for city driving.