Teams are starting to uncover some interesting aspects of the next era of power unit regulations in Formula 1. One of the most peculiar features of the new rules, which aim to prioritize sustainability, is that drivers will once again be engaged in fuel-burning activities to charge their batteries. Fuel burn involves deliberately burning excess fuel that is not needed for direct engine performance. This practice gained notoriety in F1 in 2006 and 2007 when drivers had to engage in fuel-burn laps during qualifying to reduce car weight before setting a final lap time. However, fuel burn was also seen during F1‘s blown diffuser era in the early 2010s when clever engine maps were used.