Siata was founded in 1926 as a supplier of performance parts for Fiat models and began designing sports cars under its own name in the late 1940s. The 300BC was introduced at the 1952 Geneva Motor Show as a sportier derivative of the Amica platform and was intended primarily for exportation to the US, where it was marketed for its SCCA potential. Based on a steel platform chassis, the 300BC featured aluminum barchetta-style coachwork designed by Mario Revelli…
Siata was founded in 1926 as a supplier of performance parts for Fiat models and began designing sports cars under its own name in the late 1940s. The 300BC was introduced at the 1952 Geneva Motor Show as a sportier derivative of the Amica platform and was intended primarily for exportation to the US, where it was marketed for its SCCA potential. Based on a steel platform chassis, the 300BC featured aluminum barchetta-style coachwork designed by Mario Revelli de Beaumont and initially constructed by Bertone. Toward the end of production, bodywork was handled by Turin’s Motto, while the model’s standard powerplant shifted from a 750cc Crosley engine to a 1.1-liter Fiat unit.
This car is said to have received a repaint in red in the early 1970s, and various imperfections can be seen among close-ups of the finish, trim, and lenses in the photo gallery below. Later examples of the 300BC are distinguished by a higher-profile windshield and a convertible top. A majority of the seller’s photos were taken in 2020.
Silver-painted Borrani wire wheels are secured by two-eared knock-offs and are wrapped in 135SR15 Michelin ZX tires with cracking visible on the sidewalls. Stopping is handled hydraulically by finned aluminum drums at each corner. Suspension incorporates an independent front setup with a transverse leaf spring and a solid rear axle sprung by semi-elliptical leaves. Tubular shock absorbers are utilized all around.
The cockpit houses a pair of fixed-back bucket seats trimmed in black leather with color-matched upholstery over the center tunnel. Additional features include a Bob’s Drag Suits latch-and-link driver’s lap belt, a lift-latch passenger-side lap belt, braided door pulls, door pockets, branded pedals, a dash-mounted rearview mirror, and a fire extinguisher secured behind the driver’s seat. Areas of wear can be seen on the painted floors and other surfaces.
The wood-spoke steering wheel sits ahead of a body-color dash that houses a 105-mph speedometer, a 6k-rpm tachometer, and gauges monitoring fuel level, amperage, oil pressure, and coolant temperature. The five-digit odometer shows 42k miles.
The 1,089cc Fiat inline-four features an aluminum cylinder head, pushrod-actuated side valves, and twin Weber 32 DR10SP downdraft carburetors. Service in June 2023 included fluid changes and adjustment of the carburetors.
Power is sent to the rear wheels via a four-speed manual transmission. Additional images of the underside can be viewed in the gallery below and include close-ups of areas of corrosion.