As Formula 1 returns from the break, the much-discussed and widely anticipated “development war” is set to begin in full force. One of the key topics will undoubtedly be the ADUO and, therefore, the possibility for certain teams to introduce updates to their power units. During a meeting with selected media outlets, including GP-News.net, Mercedes Team Principal Toto Wolff addressed several questions on the subject, expressing a firm stance and—unsurprisingly—one that favors maintaining the current competitive balance with as few changes as possible.
According to the Mercedes team boss, the principle behind the ADUO is clearly defined and should not be open to ambiguous interpretations. “The principle of the ADUO is to allow teams that are struggling with the power unit to recover ground, but not to overtake others. It must be very clear that any decision taken, regarding which team receives the ADUO, can have a major impact on performance and on the championship if it is not made with absolute precision, clarity and transparency.” Toto Wolff also emphasized the importance of avoiding any form of opportunistic interpretation: “It must be clear that there is no room for ‘gamesmanship’. The right spirit is needed in the way the FIA applies the ADUO.”
Going further into the technical context, Wolff suggested that there is currently only one engine manufacturer facing difficulties, while the others are operating at a similar level. During the discussion, there were multiple references to Ferrari, which has publicly spoken about ADUO and is working on a new power unit, believing it may benefit from this mechanism. “As I see it, there is one engine manufacturer that has a problem and we need to help it, while the others are more or less on the same level.” For this reason, the Mercedes Team Principal made it clear that he opposes decisions that could alter the competitive order: “I would be very surprised and also disappointed if ADUO decisions interfered with the competitive hierarchy.”
Toto Wolff highlighted that teams have access to detailed data to evaluate power unit performance, implying that any discrepancies would be easy to detect. “We are all monitoring how decisions are made. We have precise data from our analyses on engine performance, both our own and that of our competitors. I expect the FIA to use the same data and to continue protecting the integrity of the sport, because it cannot be allowed that a team, thanks to ADUO, suddenly overtakes the others.” The concept was reiterated clearly: “ADUO has always been designed as a mechanism to recover, not to make a leap forward.”
Finally, Toto Wolff called on all parties involved to maintain a responsible approach, avoiding public controversy and prioritizing internal dialogue among stakeholders. “We need to understand our responsibility as custodians of this sport and respect what Formula 1 has given us. We all have our opinions and that is legitimate, but these discussions should take place among stakeholders rather than in public. The sport is in a very good place, but we must be careful about what we say publicly, because even if it does not have an immediate effect, over time it can influence the perception of the fans.”
In summary, Toto Wolff’s comments underline the high stakes involved in the 2026 engine development race. As teams like Ferrari and Red Bull look to close the gap through the ADUO framework, the pressure is on the FIA to ensure that any performance gains are purely compensatory rather than transformative for the championship battle.
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