Toto Wolff had one job after the Belgian GP: talk about reliability, express regret, move on. Instead, he handed Red Bull a political grenade by openly declaring that Mercedes has the most powerful power unit in Formula 1. Red Bull’s response? A cheerful, almost theatrical agreement.
The Admission Nobody Expected
Wolff was trying to explain why George Russell‘s race at Spa collapsed so spectacularly, referencing a software fault that robbed all Mercedes engines of straight-line power. You can read more on that debacle in our piece on Russell’s battery failure and the chaos that followed. Somewhere between the apology and the damage limitation, Wolff slipped in the following:
“We have the most powerful power unit, we have a strong car that is capable of winning, everybody gives its maximum to minimise the mistakes and still it happens because we are humans at work.” – Toto Wolff
Sky Sports analyst Karun Chandhok could barely contain himself. His advice to Red Bull was blunt: pick up the phone and call the FIA immediately.
Red Bull’s Gleeful Response
Laurent Mekies didn’t need asking twice. The Red Bull team principal confirmed Wolff’s version of reality with barely concealed satisfaction:
“Toto is right. I also think that they have the most powerful power unit. And certainly they had a sizeable advantage on the straight this weekend again.” – Laurent Mekies
Max Verstappen was characteristically more caustic. He pointed out that if Red Bull supposedly has the benchmark engine, someone might want to mention that to whoever sets the lap times in qualifying.
What ADUO Actually Says, and Why It Matters
This is where it gets politically messy. The FIA’s ADUO system, after its first assessment period, concluded that the Red Bull-Ford Powertrains V6 combustion engine was the benchmark unit on the grid. Mercedes was rated 2-4% behind, earning it one upgrade token this year and one next season. Ferrari, Audi and Honda were deemed more than 4% off, giving them two upgrades this year and two more in 2027.
The crucial detail is that ADUO only assesses the V6 combustion element, not the hybrid system. Wolff is almost certainly talking about the complete power unit package when he boasts about Mercedes’ superiority, which is a convenient distinction. The hybrid element has been the defining battleground of the 2026 regulations, and on that front, Mercedes clearly leads.
Budapest Will Be the Reckoning
The second ADUO assessment period, which began at Monaco, closes at the Hungarian GP. Results are expected within a fortnight of that. Notably, the first period’s official results remain unpublished, still entangled in Red Bull’s ongoing review.
If the second assessment places Mercedes at the top, Red Bull’s power unit would still need to trail by at least 2% for them to unlock upgrade opportunities. Right now, that looks entirely possible.
The uncomfortable truth is this: two team principals have publicly agreed that Mercedes has the strongest power unit, while the FIA’s own system says something different. Either the system is wrong, or everyone on the pitlane is. Place your bets.
