It was a series for Grand Touring style cars competing in two classes, GT1 and GT2, the latter being less powerful and more closely related to road-going models.
[4] A † symbol and gray background denotes an entry and driver competing in the Citation Cup.
Points are awarded to the top 8 finishers in the order of 10–8–6–5–4–3–2–1 except at the Spa 24 Hours.
Drivers who do not drive the car for a minimum distance do not score points.
[2] The Citation Cup was contested by non-professional drivers competing in GT1 cars.