Fiat 600 Seicento

The car had hydraulic drum brakes on all four wheels. Suspension was a unique single double-mounted leafspring - which acts as a stabilizer - between the front wheels coupled to gas-charged shock absorbers, and an independent coil-over-shock absorber setup coupled to semi-trailing arms at the rear. All 600 models had 3-synchro (no synchro on 1st) 4-speed transaxles. Unlike the Volkswagen Beetle or Fiat 500, the Fiat 600 is water-cooled with an ample cabin heater and, while cooling is generally adequate, for high-power modified versions a front-mounted radiator or oil cooler is needed to complement the rear-mounted radiator. All models of the 600 had generators with mechanical external regulators.

Engine   

• 633 cc straight-4 OHV, 21 hp
• 767 cc straight-4 OHV, 29 hp

The top speed ranged from 95 km/h (59 mph) empty with the 633 cc inline-four engine to 110 km/h (68 mph) with the 767 cc version. The car had good ventilation and defrosting systems.

A year after its debut, in 1956, a soft-top version was introduced, as well as a six-seater variant — the Fiat 600 Multipla. It was a precursor of current multi-purpose vehicles.

Retrospectively the water-cooled Fiat 600 is sometimes over-shadowed by the air-cooled Fiat 500, but the 600 was a remarkably fast seller in its time: the millionth 600 was produced in February 1961, less than six years after the car's launch. At the time when the millionth car was produced, the manufacturer reported it was producing the car at the then remarkable rate of 1,000 a day. As of 2011 there are only 65 left in the UK that are road legal.