Overview
- Kimi Antonelli took a full power‑unit change at Monza, accepted a back‑of‑grid penalty and recovered to win from 19th, a move Mercedes said was chosen for reliability and track overtaking chances.
- Mercedes has shifted to a hardware ADUO step understood to target the turbo and is most likely to debut the spec around the United States/Mexico flyaway in late October, according to multiple reports.
- George Russell confirmed he will delay taking his own engine penalty until that ADUO upgrade arrives so the penalty coincides with the new parts and avoids a second drop later in the season.
- Ferrari reverted Charles Leclerc to a pre‑ADUO2 unit at the Madring after crash inspections, leaving teammates running different engine specs this weekend and highlighting the operational risk of installing new hardware after damage.
- The FIA’s ADUO system measures only the internal combustion engine, names Red Bull top for upgrade rights, and requires works teams to supply a single example of any new spec to customer teams at its debut, a rule that affects availability and team strategy.