Nikolas Tombazis has poured a healthy dose of cold water on any notion that the FIA’s new Additional Development and Upgrade Opportunities (ADUO) concept is a backdoor performance equaliser for Formula 1’s 2026 power-unit era.
Speaking during pre-season running in Bahrain, the FIA’s single-seater director stressed that ADUO shouldn’t be confused with a balance-of-performance lever — nor should anyone expect it to turn an underpowered package into a front-runner overnight.
“It’s important to make clear that ADUO is not a kind of balance of performance mechanism,” Tombazis said. “A team or manufacturer will not suddenly get greater fuel flow rate or more or less ballast.
“It is, in fact, a cost cap relief mechanism… That’s not to underestimate it but a manufacturer will still need to make the best engine in order to win. It’s not a magic bullet.”
ADUO is the FIA’s attempt to build a safety net into the new rules cycle without ripping up the fundamental idea that the best engineering group should still be rewarded. The governing body has been tracking internal combustion engine performance at every event and will allow extra development headroom for manufacturers that fall two per cent or more behind the leading benchmark ICE.
The key detail is what ADUO actually unlocks: not extra performance “allowances” on-track, but the ability to spend more — outside the power-unit cost cap calculation — to chase performance back down.
That nuance matters, because the political and competitive implications are already bubbling away in the paddock. Honda has been identified as trailing the benchmark on the FIA’s measurements, while Ferrari, Red Bull and Audi are also in the frame in ongoing discussions about whether they should qualify for the same relief.
The timeline for the first ADUO “checkpoint” has also been rejigged. The FIA had initially carved the 24-race season into four clean segments of six races, creating clear review windows where performance could be assessed via a power unit indexation. The first review was meant to land after Miami — originally round six — but the cancellation of the Bahrain and Saudi Arabian Grands Prix forced a rethink.
Following a World Motor Sport Council meeting ahead of Miami, the first checkpoint is now set for after the Canadian Grand Prix, which is the fifth round of the championship.
If that sounds like a minor administrative tweak, it isn’t. These checkpoints are the moments where the paddock stops speculating and the arguments start getting forensic: who is actually behind, by how much, and whether the FIA’s indexation model captures the full picture of deployability, drivability and integration with the car.
Tombazis, though, was keen to anchor the conversation in what the regulations genuinely provide. He pointed to Article E4.1.1.t of the 2026 Formula 1 Regulations as the backbone: structured, tiered cost-cap exclusions that scale with the size of a manufacturer’s performance deficit.
In simple terms, the further you are off the pace, the more financial breathing room you’re granted for development activity outside the cap. The allowances per ADUO period are set out as:
– 2–4% behind: up to USD $3.0m
– 4–6% behind: up to USD $4.65m
– 6–8% behind: up to USD $6.35m
– 8–10% behind: up to USD $8.0m
And for a deficit of 10% or more, the ceiling rises to USD $11m per ADUO period. There’s also an extra one-year-only provision for 2026: manufacturers in that 10%+ bracket can anticipate up to a further USD $8m of cost cap from future periods to accelerate development now.
It’s easy to see why teams and manufacturers are watching this like hawks. In the first season of a major regulation reset, nobody wants to be trapped on the wrong side of an early architectural choice — but equally, nobody wants to be told their rival has effectively been given a financial slingshot.
Tombazis’ point is that the FIA isn’t handing out performance “brownie points”. ADUO simply gives lagging manufacturers more room to do the hard work of clawing back — and they still have to execute that work inside the technical framework everyone shares.
That framing also hints at the FIA’s bigger concern: avoiding a scenario where a power-unit supplier is so far behind that it contaminates the sporting product for years. ADUO is designed to keep the field from fracturing at the manufacturer level without undermining the premise of the rules.
Whether the paddock buys that distinction once the first post-Canada numbers are assessed is another matter. In 2026, the fight isn’t only about who’s fastest — it’s about who can convince everyone else they’re fast (or slow) for the right reasons.
