Formula 1 is considering significant changes to car design set for implementation by 2031, with a focus on reducing vehicle weight and potentially reintroducing mid-race refuelling. The sport’s governing body aims to reverse a long-term trend of increasing car mass, targeting a reduction from just under 770 kilograms to below 700 kilograms. This weight reduction is intended to enhance vehicle handling and improve race quality for spectators.
Alongside weight targets, the planned overhaul includes replacing the current turbo-hybrid power units with simpler V8 engines. However, these V8 engines are expected to consume more fuel over race distances, complicating efforts to reduce overall car weight. This has reignited debate about the possible return of mid-race refuelling—a practice banned after the 2009 season due to safety concerns.
Support for refuelling varies within the Formula 1 community. Fan polls suggest a desire to see it return, and some drivers, including Aston Martin's Lance Stroll, express nostalgia for the era when lighter cars and refuelling facilitated more aggressive, flat-out racing. Nevertheless, many team executives remain strongly opposed, citing safety risks and increased costs as major drawbacks. Teams could face an additional annual expenditure of approximately $5 million due to the need to carry specialized equipment and fuel logistics for global races, a significant factor under Formula 1’s stringent budget cap.
Critics further argue that refuelling does little to enhance racing excitement. Peter Bayer, CEO of Racing Bulls and former senior official at the sport’s governing body, noted that analysis of past races revealed minimal benefits beyond a few dramatic incidents, with much overtaking occurring in the pit lane rather than on track. James Vowles, Williams team principal and former head of strategy at Brawn GP, echoed these views, highlighting that refuelling often locked teams into predictable stop strategies, reducing the variability and tactical depth in races. He also suggested that modern real-time data analysis would make such tactics even more predictable, diminishing suspense.
The Fédération Internationale de l’Automobile (FIA) has initiated a study to evaluate whether refuelling could be viable alongside the proposed technical changes. Final decisions may hinge on the specific engine design. If a normally aspirated V8 is adopted, the higher fuel consumption might necessitate refuelling. However, retaining a turbocharged component for efficiency could allow cars to complete races without pit stop fuel top-ups.
Nikolas Tombazis, FIA’s single-seater director, stressed that while discussions are ongoing and no final conclusions have been reached, the preference remains against reinstating refuelling. He emphasized efforts to balance increased fuel loads, estimated at roughly 20 to 25 kilograms, against overall weight reductions of around 80 kilograms to achieve more agile, exciting cars. Tombazis acknowledged the need for compromise on some cost and design issues but expressed confidence in meeting the sub-700 kilogram target.
As Formula 1 looks ahead to the 2031 regulation overhaul, the debate over refuelling highlights the broader challenges of balancing performance, safety, cost, and spectacle in the sport’s continual evolution.