F1’s calendar matched its all-time high of 21 grands prix this season, including an unpopular maiden triple-header of consecutive race weekends.
There have been suggestions the season could feature 22 or 23 in the near future, with new races targeted in the United States and Asia.
Reducing the number of races in a season would increase the value of the sport.
Some of F1’s smaller teams have suggested they would need proof of a commercial gain to support an expanded calendar.
Haas team principal Gunther Steiner said: “To go to races costs us and F1 a hell of a lot of money, so they need to make sure we have income as well, not just expenditure,” he said.