Plans for a ‘world engine’ were scrapped when the current F1 rules were introduced in 2014.
But FIA president Todt says the 2021 rules are now an opportunity to try again.
“At the moment we have separate engine regulations for every series,” he told Auto Motor und Sport. “It doesn’t have to be like that.
“The requirements for formula one and the world endurance championship are similar,” Todt added.