FIA Approves Expanded Engine Rules to Aid Struggling Honda

The FIA has officially approved regulatory changes designed to give struggling Honda extra support in Formula 1's new 2026 engine era, following weeks of discussion and a brief suspension of the vote. The revised rules expand the catch-up mechanism known as ADUO, allowing Honda—which is reportedly more than 10% behind the benchmark—greater development and financial leeway.

Why it matters:

A competitive Honda is vital for Aston Martin and for F1's credibility as a top-tier motorsport. Allowing a major manufacturer to languish at the back would damage the sport's appeal and discourage future entrants. The tweaked rules aim to prevent a lopsided grid while ensuring no single team benefits unfairly.

The details:

• Increased spending cap: The maximum under the cost cap has been lifted to $11 million for manufacturers 10% or more off the benchmark (previously $8M for being 8% off).
• One-off development budget: An extra $8 million allowance has been added for 2026 only, giving Honda a dedicated boost.
• More test bench time: The additional allowance for test bench running has been raised from 190 hours to 230 hours for those more than 10% adrift.
• Performance measurement window: The first call to decide who qualifies for the upgrades has been moved to after the Canadian Grand Prix (May 24), rather than Monaco, due to early-season race cancellations.
• Subsequent calls: The remaining upgrade windows will be after Hungary (round 11, June) and Mexico (round 18, November).

What's next:

The first verdict on which manufacturers qualify for the extra allowances will come after Canada. However, the FIA has warned that the 2% threshold and ICE performance index may be adjusted following ongoing discussions with teams to ensure fair measurement—a nod to Mercedes' concerns that the rules could be exploited. This season's three upgrade windows will determine how quickly Honda can close the gap to the front.