Kammala wannan jumla: A 1925, AIACR ta gabatar da Gasar Masana'antu ta Duniya. Alfa Romeo ba ta shiga tseren farko ba,
Indianapolis 500, amma a maimakon haka ya tafi Spa-Francorchamps don Grand Prix na Belgium. Direbobi goma sha biyu daga ƙungiyoyi huɗu sun shiga tseren, amma bakwai ne kawai suka fito, daga ƙungiyoyi biyu: Alfa Romeo da Delage. A tsakiyar hanya, huɗu daga cikin bakwai sun yi ritaya, kuma ta kashi biyu bisa uku, kawai Ascari da abokin aikinsa Giuseppe Campari suka rage. Ascari ya lashe tseren da minti 21 da dakika 58, tare da Campari yana tukawa sau biyu a kusa da hanyar da kansa don kammala tserensa.