The technical regulations still need to be refined, particularly regarding power unit parameters. However, it is no secret that several aspects of the 2027 rules — including chassis design, fuel tank specifications, and aerodynamic bodywork — are still being defined even as the championship is already underway.
The ambitious goal of achieving a more balanced split between internal combustion and electrical power has created significant challenges, as the technology may not yet be fully ready to meet such demands. While the Miami layout proved relatively forgiving in terms of energy deployment, the corrective measures for energy management already proposed within FIA discussions are expected to be introduced in Canada.
Are 2026 cars generating more downforce than expected?
The key question is whether 2026 cars are producing more aerodynamic load than expected, and whether this could lead to a steeper development curve than originally planned.
There is no clear evidence of extreme deviations so far, but the 2027 regulation framework is already under review — and this is not unprecedented. Even the power unit rules were still being fine-tuned, with FIA Single-Seater Director Nikolas Tombazis stating that “no one will go on holiday, because we need to remain open to changes.”
In recent months, however, one topic has become increasingly important: aerodynamic downforce levels. The regulator originally targeted at least a 20% reduction in vertical load compared to previous ground-effect cars, and even more in high-speed corners.
The 2025 mule cars running in Barcelona were operating with Monza-level downforce. In hindsight, this may have underestimated tyre load assumptions. While not an exact science, avoiding inaccurate data being provided to Pirelli was certainly a key objective. A revision or limitation of aerodynamic performance would suggest that the original common target has not been fully achieved.
At around 250 km/h, a 2025 car could generate approximately 1800–2000 kg of downforce. For 2026 cars, this value is significantly lower, although still slightly above initial expectations, without anything extreme.
Performance simulations suggested lap times could be more than 3.5 seconds slower on average, with even larger gaps expected on demanding circuits.
In Australia, pole position was 3.4 seconds slower year-on-year, with race pace around 2 seconds off previous reference times. In Miami, 2026 qualifying was just under 2 seconds slower than the previous season.
FIA considers early aerodynamic regulation changes
As reported in recent hours, the FIA is now actively discussing possible technical regulation adjustments aimed at reducing downforce even before the new rules have completed their first year.
At Miami, the first major upgrade packages appeared on track, delivering around four tenths of a second improvement on average. Since teams began working on baseline wind tunnel models, overall gains have reached approximately four seconds, broadly in line with expectations.
The development curve remains steep, but there is currently no evidence of extreme tyre stress or runaway performance levels.
Pirelli has already begun testing tyres for the 2027 cycle, with the next test scheduled in Barcelona. The upcoming season could also be the final year of its current contract as sole supplier, unless an extension option is activated.
The FIA has also requested several teams to begin early studies on reduced-downforce models, with results expected to guide further regulatory action.
The recurring issue for tyres remains the same: teams often provide simulation data that underestimates real performance. There is still no real-world testing with final-spec cars while regulations evolve, meaning no one truly knows how much downforce will exist in future conditions. Pirelli can only observe actual race weekend data and adjust accordingly. The 2027 prototype may still be revised before the final specification is frozen.
Safety, floors, wings and exhaust aero under scrutiny
As is well known, safety considerations allow the FIA to bypass standard voting procedures when amending technical codes. For now, everything remains in an early analysis phase, but the topic could become increasingly important in the coming weeks.
The FIA has already formally requested pre-studies from several teams based on modified CFD models across multiple proposed areas.
Key intervention zones for downforce reduction include the floor, with a push toward a simpler design, fewer aerodynamic elements, and a revised diffuser concept. While these are not necessarily radical changes, the goal is to reduce a portion of overall downforce contribution.
Additional proposals include modifications to the rear wing in both size and height, as well as — as previously discussed — a ban on aerodynamic devices around the exhaust area.
Regulation history and Ferrari’s potential impact
There is precedent for mid-cycle regulation changes. In 2022–2023, technical rules were already revised after just one year. Ferrari currently holds a know-how advantage in the so-called “Flick Tail Mode” concept, but the question is whether this advantage could be neutralised.
It is not unusual for Formula 1 regulations to be adjusted during a cycle. A recent example comes from the previous technical era, when the FIA intervened to limit porpoising and close loopholes through TD39, and later directly modified venturi channel dimensions and floor heights for 2023.
A strict reduction or ban of exhaust-driven aerodynamic concepts would primarily affect Ferrari.
The Italian team has successfully exploited a regulatory interpretation that, at Miami, around 80% of teams have already partially copied.
Under identical technical regulations, Ferrari would retain a know-how advantage in exhaust gas management and aerodynamic exploitation. However, this could disappear if the system were banned. Competitors have so far only partially explored the concept, focusing mainly on exhaust mounting brackets rather than the full tail-end architecture.
Ferrari itself had initially submitted an earlier version of the design to the FIA, which was rejected as more complex than what was eventually seen in Miami. The team led by Diego Tondi then cleverly worked around the rejection by finding performance gains in the tailbox area, effectively “sacrificing” the positioning of the differential.
The design is clearly complex and has required significant resources for development and refinement.
Historically, the FIA has consistently aimed to limit the use of exhaust gases for aerodynamic gain since 2011. It is therefore reasonable to expect further restrictions or even a complete ban in the future. However, at least for now, tyre stress alone is not considered sufficient justification for such a move.
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