Red Bull are reportedly considering challenging the FIA after a controversial development in Formula 1’s ongoing debate over the 2026 power unit regulations. The latest findings from the governing body’s Additional Development and Upgrade Opportunities (ADUO) review have sparked strong reactions throughout the paddock ahead of this weekend’s Spanish Grand Prix at the Circuit de Barcelona-Catalunya.
According to reports, Red Bull are unhappy with the FIA’s conclusions and believe the proposed measures could have a significant impact on the competitive balance of the new engine era. The ADUO process was introduced to evaluate whether manufacturers struggling under the new regulations should receive extra opportunities to improve their power units and close performance gaps.
The issue has become one of the most discussed topics in Formula 1 in recent weeks, with teams and engine manufacturers divided over how much flexibility should be granted. Red Bull, which is preparing for its first season as a full engine manufacturer through Red Bull Powertrains, is said to have serious concerns about the direction the FIA appears to be taking.
Sources suggest the Milton Keynes-based outfit feel the proposed changes could undermine the spirit of the regulations and potentially reward manufacturers that fall behind. As a result, Red Bull are reportedly exploring the possibility of formally protesting or opposing the FIA’s position during upcoming discussions.
The debate comes at a crucial time as Formula 1 prepares for one of the biggest technical rule changes in its history. The 2026 regulations will introduce a new generation of hybrid power units featuring a greater reliance on electrical energy and sustainable fuels. Manufacturers including Red Bull, Ferrari, Mercedes, Audi and Honda have invested heavily in preparation for the new era.
While the engine controversy continues to dominate headlines, another major storyline involving former Red Bull team principal Christian Horner has taken a fresh turn.
Horner has been repeatedly linked with a return to Formula 1 following his departure from Red Bull, with Alpine frequently mentioned as a potential destination. Speculation has suggested that any future move would likely involve a level of ownership or long-term influence within a team, rather than a traditional management role.
Now, the story has developed further after Renault publicly addressed reports connecting Horner to Alpine. The French manufacturer issued comments regarding the rumours, adding another layer to the ongoing speculation surrounding the experienced team boss.
Although no agreement has been announced, Horner’s name continues to be one of the most talked-about in the Formula 1 paddock. His successful leadership at Red Bull, where he oversaw multiple world championship-winning campaigns, makes him an attractive figure for teams seeking to strengthen their long-term projects.
With tensions rising over the FIA’s engine plans and uncertainty continuing over Horner’s future, Formula 1 heads into the Spanish Grand Prix weekend with several major off-track stories attracting as much attention as the action on the circuit. Fans and teams alike will be watching closely to see how both situations develop in the coming days.
