What F1’s New Engine Verdict Reveals – And What It Still Keeps Secret

The FIA confirms, following the first two ADUO windows, that Red Bull leads the 2026 internal combustion engine ranking, and no additional upgrade tokens are awarded in the second review.

This is the first official acknowledgement. Earlier, Monaco leaks outlined allocations: Red Bull locked out; Mercedes one step; Ferrari, Audi, and Honda two.

The latest bulletin withholds performance indices for confidentiality, listing only permitted opportunities, so the competitive picture must be inferred from token distribution and recent upgrade activity.

The groupings remain unchanged: Red Bull as benchmark, Mercedes roughly two to four percent behind, and Ferrari, Audi, and Honda more than four percent adrift.

Red Bull’s lack of tokens fixes its benchmark status. Ferrari’s Austria step, praised in Ferrari’s positive verdict, and Mercedes reliability tweaks yield gains, but not enough to alter the hierarchy.

Under ADUO rules, a two percent deficit to the class leader can unlock tokens for that leader. Tokens are not cumulative, so only major swings trigger redistribution.

That explains the static allocation. Mercedes and Ferrari sit within narrow margins, while Audi and Honda remain beyond four percent. Honda’s Spec 2 arrives, as outlined in its engine upgrade.

The third ADUO window runs to late October, around the United States Grand Prix. Ferrari targets another step for Monza, while Honda’s Spec 2 adds a key validation point.

FIA deems its analysis “incredibly robust,” yet Red Bull says its data did not clear a two percent gap to Mercedes. Model’s sensitivity is discussed in Red Bull engine future.

Meanwhile, trailing manufacturers gain budget and testing relief. Mercedes receives a $3 million cost-cap reduction per ADUO period while not matching Red Bull, plus extra dyno time, compounding competitive pressure.

That structure creates incentives to sit just behind the benchmark, rather than overshoot briefly and lose support. It risks entrenching status, particularly if margins fluctuate around the two percent trigger.

The FIA, via Nikolas Tombazis, signals willingness to refine ADUO. Any change needs manufacturer majority, so adjustments depend on consensus and clear evidence of unintended consequences.

Short term, Red Bull likely holds benchmark through the third window. Unless rivals find major gains, its upgrade freedom remains constrained until limited winter adjustments ahead of 2027.

For competitors, timing upgrades, safeguarding reliability, and optimising spend matter as much as pure horsepower. Recent scrutiny of McLaren’s power unit spending underlines how marginal efficiencies can shift development tempo.

Visual Summary

Daniel Miller

Daniel Miller reports on Formula 1 Grand Prix weekends with race-day analysis, team-radio highlights, and point-standings updates. He explains power-unit upgrades, aerodynamic developments, and driver rivalries in straightforward, SEO-friendly language for a global F1 audience.