Mercedes' Allison warns F1 teams will claw back every point of FIA's 2027 downforce cuts

Mercedes technical director James Allison has warned that Formula 1 teams will not passively accept the FIA’s proposed downforce cuts for the 2027 season, predicting a fresh development war as engineers race to recover the aerodynamic performance the governing body intends to remove.

The FIA is targeting a reduction of between 20 and 50 points of downforce ahead of the second year of the new formula, planning to ban several key rear aerodynamic elements. The stated goals are to improve hybrid energy management and reduce the turbulent wake — commonly known as “dirty air” — that makes close racing difficult.

Speaking on the NU Silver Arrows Radio Show podcast, Allison acknowledged the scale of the proposed restrictions but made clear that a rule designed to slow a Formula 1 car rarely achieves its aim for long.

“All I know is that the cars are going to be losing a bit of downforce from the new regs, more than a bit,” Allison said.

He then framed the coming months as an open contest between the regulator and the paddock’s engineering departments. “They’ve had a good go at trying to pull the downforce back to [the] start of the 2026 era. It’ll be interesting to see whether the teams lie down and take that or whether we recover it all or not.”

The dynamic Allison describes is a familiar one in Formula 1. The FIA periodically rewrites the rulebook to curb cornering speeds on safety and sporting grounds, only for teams to redirect their wind-tunnel budgets toward recovering the exact performance that was taken away — often within a single season.

Allison’s comments carry particular weight given Mercedes’ trajectory under the 2026 regulations. The Brackley-based outfit made a significant step forward in the first year of the new formula, suggesting its aerodynamic and technical departments are well-placed to lead any recovery effort once the 2027 rules are finalised.

The FIA has not yet published the specific technical directives that will implement the downforce reduction, meaning the precise scope of the restrictions — and the avenues teams will have to work around them — remains to be determined.