The latest edition of Italian magazine Autosprint said FIA president Jean Todt made the decision after reviewing the widespread lower speed limits in other major series, including Le Mans, GT1 and Nascar.
It was said the change would have a major impact on race strategy this year.
But in the wake of the Autosprint report, Britain’s BBC claims the FIA in fact rejected a push by the teams to lower the speed limit to 60.
Race director Charlie Whiting reportedly “told them he feels there is no need to make the change as there is no evidence that the current arrangement is unsafe”, according to the broadcaster.
Instead, the 2012 rules state that the race limit is 100kph at most races, but that the speed “may be amended by the stewards following a recommendation from the FIA F1 safety delegate”.