F1 | Power unit 2026: ADUO introduced to ensure balance among suppliers
As the 2026 regulatory revolution approaches, Formula 1 has unveiled a new system aimed at creating greater fairness among power unit suppliers. The system, called ADUO (Additional Development and Upgrade Opportunities), is designed to reduce the performance gaps that often appear at the start of a new engine cycle.
According to the FIA, after the third annual meeting of the World Motor Sport Council, ADUO will allow manufacturers at a clear disadvantage to access additional development opportunities. This includes extra time on the test bench and a potential temporary relaxation of the budget cap. The mechanism will activate after each quarter of the championship — specifically after race 6 (Miami), race 12 (Spa), and race 18 (Singapore) — enabling targeted interventions to prevent technical imbalances from affecting the championship.
The FIA has also implemented support measures for engine manufacturers facing reliability issues, which frequently occur at the beginning of a new cycle. Additionally, minor changes have been made to the 2026 technical regulations, affecting the survival cell, suspension, aerodynamic components, and power units.
Other changes
The 2026 overhaul will be significant, encompassing car concepts and tires. On the power unit side, the MGU-H will be removed, electric power will increase from 120 kW to 350 kW, and fully sustainable fuels will be introduced. The number of power unit manufacturers will rise from four to five: Renault will exit, while Audi and Red Bull-Ford will join the existing Ferrari, Mercedes, and Honda lineup.
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