Overview
- ADUO is a catch‑up rule that lets power‑unit makers 2% to 4% off the benchmark set by Mercedes make one targeted upgrade, with bigger gaps unlocking extra dyno time and limited cost‑cap leeway.
- The first eligibility check is expected to move from Miami to Monaco after early race cancellations, with three review windows planned across the season.
- Audi is reported to qualify for two ADUO upgrades, though boss Mattia Binotto says engine lead times are long and points to a 2030 goal for a full competitive push.
- Honda also trails, with trackside lead Shintaro Orihara highlighting work on battery reliability, engine output, and energy management using data gathered at Suzuka.
- Some reports suggest Aston Martin could get an ADUO‑enabled Honda upgrade by the British Grand Prix, but that timing has not been confirmed by the FIA.