1993: First class
Champion: Nicola Larini
1993 was the year in which the new class 1 regulations were introduced, prescribing engines with a maximum displacement of 2.5 litres and a maximum of six cylinders. In addition, very liberal modifications to the engine, chassis and aerodynamics were permitted. Alfa Romeo was the first manufacturer to build a pure-blooded touring car and was duly rewarded: Nicola Larini took the title home to Italy for Alfa Romeo.