The FIA ruled Red Bull-Ford's combustion engine is F1's most powerful, granting Mercedes and Ferrari extra development opportunities under new ADUO regulations. Max Verstappen expressed surprise at the decision, stating Red Bull never felt they had the best power unit. The team is now discussing the assessment with the FIA to understand its basis. Mercedes' George Russell, however, was not shocked, noting Red Bull's engine strength was evident since pre-season testing. Russell emphasized the ADUO rules target the combustion side specifically, and believes Mercedes' recent strong performances underscore their "incredible" chassis, not solely the engine. This controversial ruling means Red Bull's key rivals gain valuable chances to close the performance gap. How Red Bull's challenge against the FIA's finding plays out could significantly shape the competitive landscape for 2026 and beyond.

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