Charles Leclerc will drop get a grid drop of five places at the United States Grand Prix, after moving on to his sixth internal combustion engine (ICE) of the season according to Italian media.
While Ferrari's reliability this year has been troublesome, as Leclerc is already on his fifth ICE prior to this one being introduced to the pool.
But the reason behind the change is not related to the mileage of the fifth ICE, instead the team is testing an improved engine for the last four races of the year.
With permission from the FIA, the team has replaced some elements to ensure that reliability problems in the power unit are solved according to Italian Motorsport.
If the test succeeds, these new elements will be introduced for their 2023 power unit.
Only Leclerc will get the upgrades for the rest of the season, meaning Carlos Sainz will have to wait until next year.