Ferrari have called on Formula One's rulemakers to consider changing the rules that prevent engine manufacturers from making mechanical changes to its power units during the season.
Mercedes have constructed a far more powerful turbocharged V6 hybrid engine that their Ferrari and Renault counterparts this season, but because the rules only permit alterations to engine mapping and software, that is likely to Mercedes' dominance in that regard is likely to continue for the foreseeable future.
At last week's Belgian Grand Prix, Ferrari Team Principal Marco Mattiacci told reporters that the sport shouldn't be as restrictive in its engine regulations if it wants other teams to challenge the status quo.
"I would like to see a couple of opportunities [allowed] a year to work on the engine," Mattiacci said.
"The DNA of Formula 1 is innovating and catching up with the best and fastest one.
"That's what we keep, as Ferrari, insisting, and one of the areas [where this can be done] is engine freezing."
After a disappointing first half of the season, which saw the Maranello team finish on the podium just twice through Fernando Alonso, Ferrari have recently sacked engine chief Luca Marmorini during an engine department restructure.