A few months later, the five-door Familiare (Station Wagon) was added to the lineup, one of a very limited number of factory offerings in this class in Europe at the time.

The 1800 model had a six-cylinder in-line engine of 1795 cc and a power output of 75 hp (55 kW; 74 bhp) delivered through a 4-speed manual transmission.

[2]: 378  This proved popular in southern Europe, equipped with a version of the 1481 cc petrol inline-four engine developing just 60 PS (44 kW; 59 hp): the low power engine permitted the transport of customers in comfort and space at urban speeds, without consuming too much fuel.

He discussed his plan with Fiat's Vice President Gaudenzio Bono in 1959 and it was arranged to supply Abarth with bare 2100 chassis and drivetrains.

The chassis was strengthened and shortened, now on a 2,450 mm (96 in) wheelbase, and was fitted with a bored out and tuned engine with an Abarth exhaust system and Dunlop disc brakes on all four wheels.

[4] As originally presented, the Spider was given a different front end treatment of a rectilinear nature, with twin headlights mounted at an angle.

Subtle changes took place at the front, while side marker lights were added, and grilles and bumpers were altered several times.

[6] Of these, three examples were built with right-hand drive (two Coupés and one Spider) and delivered in the United Kingdom by Abarth's local concessionaire Tony Crook.

[7] At Turin in November 1960 and again at Geneva in March 1961, an updated design by Ezio Ellena [de; nl] was shown.

This design was first shown in Turin in November 1960 as the Fiat 2100 S. Thanks to triple carburettors, the tuned engine produced 130 hp (96 kW).