Designed by the famous Dante Giacosa, head of engineering development at Fiat, the 600 was the first small rear-engine, four-passenger car produced by the company.
Fiat, well aware of the success of Germany’s Volkswagen Beetle and France's Citroen 2CV wanted to ensure that they would have a model that was as good if not better.
While there was an element of competition, Fiat's main goal was to minimise any chance of these models taking a share of the domestic market- which they were succeeding in achieving against the dated 500 Topolino.
The new 600 series made its debut early in 1955.
Sitting on a footprint between the 500 Topolino which it replaced and the new 500 scheduled for launch the following year, the 600 carried four passengers in comfort as well as offering ample luggage space both behind the rear seats as well as under the hood to allow for long-distance travel.
Fiat had an eye to the future as Italy's road infrastructure was being continually upgraded, and it was anticipated people would want to take advantage of them.
The early version of the Fiat 600, powered by rear-mounted 633 cc four-cylinder engine was capable of producing 20 bhp, although the vehicle's engine capacity was a further twice during its 14-year production run, reaching a maximum of 843 cc.
Unlike the Volkswagen Beetle, the Fiat 600 had a water-cooled engine, with an ample cabin heater.
While cooling was generally adequate for the smaller engined version of the 600, as engine power was increased, fitting a front-mounted radiator or oil cooler became an absolute necessity to complement the rear-mounted radiator.
Because the Multipla was 16 cms ( 7 ins) taller than the saloon or convertible version passengers were able to travel in relative comfort and without running the risk of overheating that was fairly standard in the 500 sedan version. thanks to the wagon's water-cooled engine.
With a million cars sold within the first six years that the model was in production, and a total of 2.6 million during its 14-year production run the Fiat 600 was Fiat's best-selling car of the Fifties.
Many of these sales were notched up in South and Central America, Fiat's rapidly developing and highly valuable market and a source og valuable export income when Italy's economy was showing signs of recovery.