Formula 1’s governing and commercial bodies have agreed a package of regulatory changes for the 2027 season, the most visible of which would reduce the standard grand prix distance by 15 kilometres and replace the existing three-hour maximum event duration with a circuit-specific ‘hard stop’ time. The decisions were reached at the third Formula 1 Commission meeting of 2026, held on Monday 21 September at the FIA’s offices in London and jointly chaired by FIA Single-Seater Director Nikolas Tombazis and FOM President and CEO Stefano Domenicali. All changes remain subject to formal ratification by the FIA World Motor Sport Council before they can be written into the regulations.
Shorter races driven by power unit fuel demands
From the 2027 season, the standard grand prix distance would fall from 305km (189.5 miles) to 290km (180.2 miles). Depending on the circuit, the FIA confirmed this corresponds to a reduction of two or three laps per race.
The change flows directly from refinements being made to the 2027 power unit regulations. According to Autosport, the internal combustion engine is being upscaled to an output of 420kW for 2027, while the maximum power from the MGU-K is reduced to 300kW — or 350kW in overtake mode. To deliver that increased combustion output, the fuel flow rate is being raised by five per cent. BBC Formula 1 reported that the resulting power balance will shift from the current 53-47 combustion-to-electric ratio to 58-42 in 2027, before moving to 60-40 in 2028.
More fuel flow means greater fuel consumption over a race distance, which would ordinarily require a larger tank. The complication, as BBC Formula 1 explained, is that the fuel tank sits within the chassis structure itself. Some teams had indicated a wish to carry their existing 2026 chassis into 2027 as a cost-saving measure, meaning they would be unable to accommodate an enlarged tank without a structural redesign. By trimming the race distance instead, the FIA and FOM have reduced the total fuel load required to finish a grand prix, preserving that option for teams seeking to retain their current chassis.
Autosport noted that whether the shortened distances will remain in force beyond 2027 is not yet clear. The 2028 regulations are set to push ICE output to 450kW with an overall 13 per cent increase in fuel flow — a step that Autosport reported will require a larger fuel tank in any case, suggesting the distance cut may function as a bridging measure for a single season rather than a permanent reconfiguration of the sport’s format.
Hard stop replaces the three-hour window
The second headline change concerns races disrupted by rain or accidents. Under current rules, a grand prix must conclude within three hours of its start time, inclusive of all interruptions. Under the proposal, that ceiling would be removed for 2027. In its place, a hard stop time would be set individually for each event, with the two-hour limit on actual racing time remaining unchanged.
The FIA’s published statement described the purpose as ensuring spectators have the best possible chance to enjoy a full race when disruptions occur. The flexibility of a circuit-specific deadline is deliberate: BBC Formula 1 reported that night races, where artificial lighting removes any dependence on natural daylight, will benefit from greater leeway to push the hard stop later, while daytime events at venues with an early local sunset will face a tighter window. The new system acknowledges that a single blanket duration was a blunt instrument across a calendar spanning vastly different time zones and climatic conditions.
Free practice extensions and gearbox homologation
Two further measures complete the 2027 package. Race directors would gain greater flexibility to extend Free Practice sessions interrupted by red flags. Under the existing framework, the clock runs continuously during practice red flags, unlike in qualifying and races where the session is formally suspended. Sky Sports F1 noted that the power to grant extensions currently applies only on Sprint weekends; the new rules would make such extensions available across the standard race-weekend schedule as well. Autosport pointed to the 2026 Spanish Grand Prix as an illustration of the practical problem: an incident involving Lewis Hamilton at Turn 22 during FP3 required approximately 25 minutes of barrier repairs, and a late crash by Ollie Bearman truncated the session further, leaving teams with significantly reduced running before qualifying.
Gearbox homologation would also be removed for 2027. The FIA’s official statement recorded that the decision followed consultation with the relevant manufacturer working group and a recommendation from the Sporting Advisory Committee, with the stated aim of preserving supplier development freedom.
Competitive implications
The proposed distance reduction links the sporting format to the revised power-unit requirements. Shorter races would help teams that want to retain their 2026 chassis avoid a larger fuel tank for 2027. The FIA also says removing gearbox homologation would preserve suppliers’ development freedom; it has not quantified how either change would affect competitiveness.
The World Motor Sport Council must still ratify the package. The same Commission meeting also agreed minor changes to the 2026 Sporting and Financial Regulations and further adjustments to the 2027 Technical Regulations. Those decisions should be distinguished from the detailed race-distance and timing proposals described in the published statement.