Full Breakdown
FIA ADUO Assessment Names Red Bull Benchmark, Sparks PUM Debate
6/13/2026, 6:39:03 AM
ADUO Rankings Name Red Bull as ICE Benchmark
The FIA’s ADUO assessment, released after Monaco, named Red Bull Ford Powertrains’ internal-combustion engine (ICE) as the benchmark. Manufacturers > 2 % behind receive one homologation upgrade; > 4 % behind receive two. Red Bull, as benchmark, cannot receive ICE upgrades, while Mercedes, Ferrari, Audi and Honda qualify for one or two.
Data & Statistics
- Red Bull ICE = reference.
- Mercedes ? 2 % slower on ICE.
- Ferrari ? 4 % slower.
- Audi 4-6 % slower.
- Honda 6-8 % slower.
- ADUO evaluates ICE output only; electrical performance is excluded.
Official Statements & Responses
Mercedes team principal Toto Wolff called ADUO a “protection mechanism” using torque-sensor data, while FIA director Nikolas Tombazis said the formula was kept simple after April talks, rejecting turbo-size factors. Williams director James Vowles said the result shows Red Bull’s ICE as strongest, while Mercedes leads electrically.
Criticism & Opposition
David Croft (Sky Sports) questioned why Mercedes, the leading chassis-engine package, gets upgrade allowances while the benchmark engine does not, calling ADUO a “balance of performance” risk. Lewis Hamilton called the result “surprising,” saying Mercedes’ power unit is “as good as anyone’s” and that upgrades for others will take months. Alex Albon said no team wants to be officially labeled the best, underscoring the political complexity.
Verbatim Quotes
- “If at the end of the season you have such a stinker that you need to improve your power unit, fine, do it. Give people some extra money to do that. But why are we in this position?” — David Croft, Sky Sports commentator
- “I think Mercedes still has as good a bench, maybe as good an engine.” — Lewis Hamilton, Mercedes driver
- “I think we were all a little bit surprised with that news,” — Max Verstappen, Red Bull Racing driver
Conflicting Reports & Gaps
ADUO measures only ICE torque, ignoring turbo size, plenum temperature and electric output, which teams say skews the benchmark relative to race performance. Mercedes has won all six races yet its ICE ranks second. The FIA has not released raw sensor data or exact percentage gaps, and the public document contains no provisional language, indicating the review is a verification step rather than a re-assessment.
Why It Matters
ADUO upgrades can narrow performance gaps without breaching the cost cap, but the system may act as a hidden balance-of-performance tool, influencing development budgets and strategic planning for all five power-unit manufacturers.
What’s Next
The FIA has announced a data review before the Barcelona-Catalunya Grand Prix. Red Bull, Mercedes and the other manufacturers will await verification of the ADUO rankings before planning further upgrades.
