1925 Grand Prix season

The 1925 Grand Prix season was a watershed year in motor racing. It was the first year for the new AIACR World Manufacturers' Championship season. The championship was won by Alfa Romeo, with its P2 model. In January, the AIACR had settled on the championship format – four Grands Prix to be held in the US, Belgium, France and Italy (of minimum 800km length), with compulsory attendance of the Italian GP and the manufacturer's home race to qualify. The best three of the four results would count. It ran on the successful 2-litre formula already in place.

1925 Grand Prix season

The 1925 Grand Prix season was a watershed year in motor racing. It was the first year for the new AIACR World Manufacturers' Championship season. The championship was won by Alfa Romeo, with its P2 model. In January, the AIACR had settled on the championship format – four Grands Prix to be held in the US, Belgium, France and Italy (of minimum 800km length), with compulsory attendance of the Italian GP and the manufacturer's home race to qualify. The best three of the four results would count. It ran on the successful 2-litre formula already in place.