Formula 1 drivers Max Verstappen and Isack Hadjar have pushed back against George Russell’s push for standardized cooling vests during high-temperature race weekends, arguing over safety mandates, car design, and physical endurance in the cockpit. gp33.nl reported that Russell wants the FIA to develop and mandate cooling systems to protect drivers from extreme heat, while Red Bull Racing drivers Verstappen and Hadjar rejected the proposal entirely during the build-up to the Singapore Grand Prix.
The Cooling Vest Debate in the 2026 Season
The discussion surrounding cockpit temperatures and driver cooling has intensified as the Formula 1 calendar approaches its fourth “heat hazard” weekend of the 2026 season. Under current FIA regulations, when ambient temperatures are projected to exceed 31 degrees Celsius, a heat hazard is declared, allowing drivers to choose between wearing a circulating water-based cooling vest or adding 0.5 kilograms of corresponding ballast to their car, according to Motorsport coverage of the event. The standardized vest, developed following severe cases of heat exhaustion during the 2023 Qatar Grand Prix, circulates water through an onboard tubing system.
Russell Urges FIA to Provide Reliable Cooling Systems
George Russell has argued that the FIA should take responsibility for providing a reliable cooling system because extreme cockpit heat presents a direct safety hazard. Speaking about his own team, Russell explained that Mercedes chose not to develop a bespoke cooling solution due to budget cap limitations and the allocation of technical resources toward car performance, specifically avoiding pulling staff away from the development of the W17 chassis. Russell pointed to severe conditions at past events, such as the 2023 race in Qatar where drivers experienced extreme physical distress, as evidence that reliable cooling is essential for maintaining lap times and preventing driver errors caused by overheating.
Max Verstappen and Isack Hadjar Dismiss the Hardware
Red Bull Racing drivers Max Verstappen and Isack Hadjar strongly disagreed with the Mercedes driver’s stance. Isack Hadjar asserted in Singapore that cooling vests should be banned outright, stating that Formula 1 is designed to test physical limits and should remain a demanding challenge for the world’s best drivers. Max Verstappen echoed those reservations, criticizing the practical implementation of the vests. Verstappen stated that the system is unnecessary, describing the cockpit conditions as warm rather than a sauna, and complained that the extra wiring restricts a driver’s freedom of movement inside the car. Verstappen expressed skepticism regarding the mechanical reliability of the equipment, noting that he had never encountered a system capable of functioning effectively for a full 90-minute Grand Prix distance.
Pump Failure Causes Heat Stroke for Kimi Antonelli
Concerns over the mechanical reliability of current cooling systems are shared across the paddock, with Mercedes driver Kimi Antonelli revealing significant personal difficulties with the hardware during previous race weekends. RacingNews365 reported that Antonelli suffered a heat stroke during the United States Grand Prix in Austin last year after a pump failure caused the system to circulate 50-degree water through his vest for the duration of the session. While Ferrari driver Charles Leclerc indicated he would prefer an imperfect system that offers relief for even 15 or 20 laps over having no cooling assistance at all, other competitors remain heavily focused on physical conditioning and training rather than relying on unproven cockpit technology.
Teams Manage Thermal Hazards at Marina Bay Street Circuit
The disagreement over driver cooling unfolds against the backdrop of a complex sprint weekend at the Marina Bay Street Circuit, where teams face unique track characteristics and high humidity. Verstappen enters the Singapore weekend following a victory in Malaysia—the first win for the new Red Bull Powertrains and Ford technical partnership—while managing the limited practice time available during a sprint format. Track temperatures and tight corner geometries will dictate performance as teams balance car balance, tire degradation, and cockpit thermal management under the ongoing FIA heat hazard designation.
Keep reading
