Like all of the 6C series, the 1930 6C-1750 Gran Sport (GS) benefited from Vittorio Jano’s excellent engineering and design principles. It was an updated version of the 6C-1750 Super Sport from 1929 which had similar specification. Engine now developed 102 hp. New to the Gran Sport was shorter wheelbase that was reduced 50mm with shorter rear leaf springs. The slightly smaller fuel tank was repositioned behind the rear wheels and the battery box was moved from the fender to inside the cockpit. The first big win of the GS was at the 1930 Mille Miglia, where Tazio Nuvolari won in an epic duel with Achille Varzi.
At the 1930 Targa Florio the Alfa Romeo factory team had arrived with two 175 hp, eight-cylinder, 2.0-liter P2 Grand Prix cars and several 102 hp 6C-1750 GS sports cars. P2 cars were for the disposal by experienced Achille Varzi and Giuseppe Campari. The drivers of GS were Tazio Nuvolari, Count Aymo Maggi, and Pietro Ghersi. The Alfa Romeo team manager Aldo Giovannini and Vittorio Jano, designer and engineer, considered the Grand Prix cars as too dangerous for this circuit. It was decided to scrap the two P2’s and use the stripped six-cylinder 1750 cc sports cars instead. Varzi, who was driving at Targa for the first time, preferred the P2’s power advantage, while Campari, 38 years old, who driven in the Targa nine times since 1914, took over Ghersi’s 1750 sports car. The race demonstrated that Varzi’s decision was right. He won ahead of Chiron and Conelli in Bugattis. Campari finished 4th, best of GS drivers.
Tazio Nuvolari in works GS was second behind Varzi after first out of five long Madonie laps. Then he dropped to third, behind Chiron, on lap 2, to fourth being passed by Campari on lap 3, and finally finished 5th.
| Season | Series | Event |
| 1930 | Grand Prix | Targa Florio |
| Driver | No. | Entrant |
| Tazio Nuvolari | 40 | S.A. Alfa Romeo |
| Scale | Manufacturer | Collection |
| 1:43 | Brian Phipps / Metro Conversion | |
| Cat. No. | Quality | Rarity |
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