Overview
- The FIA issued provisional ADUO allocations that left Red Bull with no additional internal combustion engine upgrades while granting Audi and Ferrari two upgrades each and Mercedes one.
- Audi boss Mattia Binotto confirmed the manufacturer received the two allowed upgrades and said the benefit will be mostly medium‑to‑long term because converting dyno gains into track performance takes months of development.
- Red Bull formally challenged the assessment, prompting the FIA to recheck in‑car torque‑sensor data and to reanalyse earlier race measurements before finalising allocations.
- Ferrari has completed its first ADUO ICE evolution and is reportedly ready to ship the revised power unit to the Red Bull Ring for a possible debut this weekend if the FIA formally approves the change.
- ADUO is based solely on measured ICE power (kilowatt delta from in‑car torque sensors), grants extra homologation slots, dyno/testing hours and scaled cost‑cap allowance, and critics say that narrow metric ignores ERS, energy management and on‑track integration.