FIA technical delegate Jo Bauer measured both the left and right floorboards on Isack Hadjar’s Red Bull RB22 and found each exceeded the RV-FLOOR BOARD reference volume by 2 mm, a breach of the technical regulations. He referred the matter to the stewards under Article C3.5.5, and at a morning hearing the stewards moved Hadjar from ninth on the grid to the back. The decision is subject to any appeal.

Red Bull may elect a pit-lane start for Hadjar, which would break parc fermé and allow setup changes before the race. The team also retains the right to appeal the stewards’ decision under FIA procedures. All other cars passed post-qualifying checks, including Hadjar’s teammate Max Verstappen, who qualified second. Red Bull brought aerodynamic upgrades to Miami.

Hadjar described the car as ‘very hard to drive’ in low-grip, high-temperature conditions and said he ‘just couldn’t put it all together.’ He attributed those comments to setup and handling issues separate from the dimensional infringement. The stewards’ ruling changes Hadjar’s starting position and could affect Red Bull’s race strategy.