Wolff's most powerful engine claim fuels FIA rowToto Wolff may have intensified the dispute over Formula 1's new engine equalisation system by openly declaring Mercedes has the most powerful power unit on the grid. We have the most powerful power unit and a top car capable of winning, he said. That assessment denied Red Bull access to the ADUO mechanism, which allows weaker manufacturers additional power unit development opportunities. When Asked about Wolff's apparent admission, Laurent Mekies smiled: I think Toto's right, the Red Bull boss said. Wolff's comments are not expected to alter the FIA's existing calculation, which focused on the combustion engine rather than the full performance of the hybrid power unit.