Overview
- The FIA is rechecking in‑car torque‑sensor measurements after Red Bull formally challenged provisional ADUO rankings that placed its internal combustion engine ahead of rivals.
- ADUO assesses only ICE torque and excludes battery and hybrid efficiency, yet a benchmark ruling awards long‑term benefits such as extra homologation changes, dyno/testing hours and scaled cost‑cap allowances.
- Audi and Ferrari have already used ADUO windows to bring ICE changes, with Audi running a demo in Barcelona and Ferrari introducing a first upgrade at the Austrian Grand Prix.
- Ferrari’s customer teams Haas and Cadillac have delayed fitting the updated Ferrari engines because spare parts are in short supply and teams fear early fitment would raise reliability and replacement risks.
- Red Bull says the provisional ranking creates a tactical danger that rivals could develop non‑ICE areas to keep it frozen as the benchmark and thereby block Red Bull from future ICE updates.