Audi quietly ran upgraded F1 engine at Barcelona after ADUO concession approval

Audi deployed an upgraded Formula 1 power unit as early as the Barcelona Grand Prix, it has emerged, making it the first manufacturer to act on the FIA’s Additional Development and Upgrade Opportunities (ADUO) concession framework after its inaugural review period.

The ADUO mechanism permits engine suppliers deemed to be lacking in power to introduce additional updates beyond the standard development tokens. The first review was conducted following the Canadian Grand Prix, with the FIA distributing results to manufacturers in Monaco after benchmarking each power unit — identifying Red Bull Powertrains as the reference point for internal combustion engine performance.

Concerns subsequently raised by Red Bull Powertrains prompted the FIA to revisit the review process, though the initial results remained valid pending any further communication from the governing body. What few anticipated was that an eligible manufacturer would be ready to deploy upgrades at the very next round.

FIA technical documentation published on the Friday of the Catalan race confirmed that both Audi cars were fitted with new internal combustion engines and turbochargers, though the significance of the update passed largely unnoticed at the time. The revised power units are understood to have incorporated a series of incremental tweaks — nothing transformative — focused primarily on improving driveability rather than outright performance.

The speed of Audi’s response has caught much of the paddock off-guard. It points to a development programme that had been running in parallel at the manufacturer’s facilities in Ingolstadt and Hinwil for some time, with the updated engines effectively ready and waiting for regulatory clearance before being shipped directly to Barcelona.

This upgrade is understood to represent only the opening step in a broader, ongoing development push, with Audi continuing to refine its power unit package across the remainder of the season.