Two prototypes and three preproduction aircraft were built, however, quantity production of the G.80 did not proceed after the Aeronautica Militare found it did not fulfil their requirements after a formal evaluation.

Fiat opted to continue development, producing the more refined G.82 powered by the Rolls-Royce Nene engine; the company also proposed various specialised versions of the aircraft, including a night fighter, aerial reconnaissance, and close-support models.

In the aftermath of the Second World War, several parties was keen for Italy to enter the jet age and to revitalise its aircraft industry.

The company's design team produced an aircraft that featured all‐metal construction, a tandem seating configuration, and was equipped with a pressurised cabin, a swept wing, and retractable tricycle landing gear.

This variant featured numerous refinements and detailed changes; the most obvious being an elongated fuselage, the adoption of a Rolls-Royce Nene engine in place of the G.80's de Havilland Goblin, and wingtip tanks.

While it proved itself to have superior performance to the American Lockheed T-33, the G.82 lacked the economic advantages associated with the T-33, which was already in widespread service with numerous NATO nations, including Italy.