FIA confirms Boost Mode ban for wet races before Miami GP

The FIA has confirmed an immediate ban on boost mode usage in wet conditions ahead of the Miami Grand Prix, following driver concerns over the behaviour of the 2026 Formula 1 cars in low-grip environments.

The revision removes a key overtaking tool whenever track conditions are classified as wet. A new technical directive states that boost mode “will be inhibited and is not allowed” in these scenarios, eliminating access to a system capable of delivering up to 350kW of additional power.

The decision is linked to the characteristics of the current hybrid power units, which produce immediate torque through their electrical systems. Drivers have reported that this delivery can trigger instability, particularly on corner exit, with the risk amplified on damp or wet surfaces.

With boost removed, energy deployment in wet conditions will instead be controlled through standardised engine maps rather than driver-activated systems. This change is intended to produce a more predictable power curve and reduce sudden spikes in acceleration.

Additional restrictions have also been applied to aerodynamic systems. In low-grip conditions, only partial activation of driver-adjustable bodywork will be permitted in designated zones, limiting straight-line drag reduction while maintaining rear stability.

The update forms part of a broader package of mid-season regulatory changes tied to safety and performance concerns raised during the opening rounds of the 2026 campaign. Earlier measures included limits on battery deployment, adjustments to energy recovery, and a cap on boost power in race conditions to reduce closing speed differentials.

The timing of the changes carries immediate relevance, with forecasts indicating a high probability of rain across the Miami weekend. Local protocols in the United States also require sessions to be suspended in the presence of lightning, adding further uncertainty to race operations.

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Written by

Jawad Yaqub

An eCommerce Specialist by day and reporting on F1 by night. Jawad is passionate about motorsport, having provided accredited F1 coverage for more than a decade. Live blogging (almost) every grand prix too since 2014, as well as articles on the Supercars Championship. Also keen on sustainability, photography, collecting vinyl, (trying to) expertly barbeque and learning to Dad.

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