Following the major accident at the 1955 24 Hours of Le Mans that killed 80 spectators, 1955 champions Mercedes-Benz officially withdrew from motorsports and thus did not defend their title.
[1][2][3] The championship remained as a contest for manufacturers, with the factory teams of Scuderia Ferrari, Maserati, Aston Martin and Jaguar leading the way.
In the season finale, Phil Hill and Maurice Trintignant added a second win to the 290 MM's tally in only its third major race.
[2][4] Ferrari's chief rivals, Maserati hired Stirling Moss for the season, and prepared a works team for all the rounds of the championship.
At the opening round, the 1000 km Buenos Aires, the factory efforts paid off, when all the large 4.0-litre Ferraris suffered mechanical problems, and Moss and local hero, Carlos Menditéguy took overall victory, in a 300S.
The Internationales ADAC 1000 Kilometer Rennen auf dem Nürburgring changed this when Moss and Jean Behra took over a second car and drove it to victory.
The championship ended at the Sveriges Grand Prix and Maserati had high hopes to gain enough points to win over Ferrari.