SPA-FRANCORCHAMPS, Belgium -- Valtteri Bottas will find out on Friday morning if he will start from the back of the grid at this weekend's Belgian Grand Prix, as Mercedes makes a final call on whether to run its final engine upgrade of the season on both cars at Spa-Francorchamps.
Title rival Ferrari is also expected to bring an upgraded power unit to Spa after running its latest specification in the cars of its two customer teams Haas and Sauber at the last race in Hungary. Ferrari has gained the upper hand in terms of power output at recent races, but Mercedes is aiming to level the playing field with its third and final engine upgrade.