Ferrari's rivals are becoming concerned about the Italian team's power advantage after the Belgian Grand Prix proved beyond doubt that Maranello's engine is the class of the field.
In the past two years, Ferrari's V6 turbo hybrid has replaced Mercedes' as the class-leading power unit in Formula One. Developments throughout 2018 saw the team take a significant advantage that it has only extended with the development of its engine this year.
Combined with an extremely efficient aerodynamic package the Ferrari was as much as 15km/h faster on the straights than rivals Mercedes at the Belgian Grand Prix, and the car's straight-line speed advantage helped Charles Leclerc secure the team's first victory of the season on Sunday.