The Fiat X1/9. But everybody calls it the Bertone

The Fiat X1/9 is a two-seater mid-engined sports car designed by Bertone and manufactured by Fiat from 1972-1982 and subsequently by Bertone from 1982-1989.

With a transverse engine and gearbox in a mid-mounted, rear-wheel drive configuration, the X1/9 was noted for its excellent handling, lightweight-removable hardtop, front and rear-storage compartments — and for being designed from its conception to meet the late 60s U.S. safety regulations.

History and packaging
The X1/9 succeeded a 1969 show concept car called the Autobianchi A112 Runabout, with styling by Bertone under chief designer Marcello Gandini.

Designed around the all-new 128 SOHC engine and gearbox (transmission) from the front wheel drive Fiat 128, the X1/9 relocated the transverse drive train and suspension assembly from the front of the 128 to the rear of the passenger cabin, directly in front of the rear axle, giving a mid-engined layout. The layout also located the fuel tank and spare wheel side by side ahead of the engine, directly behind the seats — optimizing the proportion of the car's weight falling within its wheelbase for more effective handling and also enabling cargo areas front and rear.

Fiat began marketing a right-hand drive variant in 1976.

Unlike Fiat's marketing nomenclature at the time which used a numerical system (e.g., 127, 128, 124, 131) denoting relative position in the model range, the X1/9 retained its prototype code as its marketing name. Fiat's prototype coding used X0 for engines, X1 for passenger vehicles and X2 (for commercial vehicles). The X1/9 was thus the ninth passenger car developed using the nomenclature.

Concept car
The prototype car featured a distinctive wedge shape and took many styling cues from contemporary power-boat design. Though the more extreme features of the Runabout such as the C pillar mounted headlights and the small wind-deflector windscreen were lost for the production car, many aesthetic features of the Autobianchi Runabout are readily identifiable on the X1/9. The long flat bonnet (hood) with central indentation, the large front overhang, the wedge shape with prominent C pillar roll-over hoop and the car-length indented plimsoll-line all made the successful transition to the X1/9, giving it a highly distinctive appearance.

Once developed for production, the two-seater featured sharp-edged styling with a wedge shape, pop-up headlights and a removable hard top roof panel (targa top). The removable hardtop stores in the front luggage compartment, below the front hood, only slightly reducing the space available for cargo. An aftermarket company offered a top made of lightweight clear-smoked polycarbonate.

Images: Fiat; Carrozzeria Bertone s.p.a.; lotusespritturbo.com
Text: Wikipedia