All improvements and modifications to the vehicles are to be done in accordance with the Historic Car Racing Rules so that, as far as possible, the specifications of the period are preserved and modifications of performance and behaviour which could arise through the application of modern technology are as far as possible prevented.

This type of competition is not simply another formula in which to acquire trophies, it is a discipline apart, in which one of the essential ingredients is devotion to the cars and to their history. Historic Car Racing enables the active celebration of the History of the Motor Car.

In summary, the aim is to retain the essence of a period race car and not to create a modern race car within a classic shell.