Ferrari’s Massive ADUO Dilemma: Why a Quick Fix Won’t Solve Their Engine Lag

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The paddock is buzzing with some major off-track political drama! While the teams are prepping for the tight streets of Monaco, Ferrari’s engineering department is locked in a desperate battle to fix their massive 2026 engine deficit.

We all knew the introduction of the new 2026 engine regulations was going to create performance gaps, which is exactly why the FIA introduced the ADUO (Additional Development and Upgrade Opportunities) safety net.

But as highlighted by a recent tweet from @FerrariF1FRA, translating a report from Italian insider Giuliano Duchessa, Ferrari is facing a brutal financial and technical dilemma regarding how to actually deploy their allowed upgrades.

The $3 Million Question​


According to the translated report, Ferrari, Honda, and Audi were smart enough to prudently anticipate the extra $3 million budget cap allowance granted to manufacturers suffering an ADUO deficit of at least 2%. Ferrari has already carried out partial work on an updated “ADUO power unit” and could technically utilize it as soon as the FIA grants official homologation.

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May 23, 2026; Montreal, Quebec, CANADA; Ferrari driver Lewis Hamilton (44) during Lenovo Grand Prix Du Canada qualifying at Circuit Gilles-Villeneuve. Mandatory Credit: Eric Bolte-Imagn Images

But here is where the massive catch lies. Implementing an early “ADUO 1” upgrade might give Charles Leclerc and Lewis Hamilton a tiny short-term boost, but the Scuderia knows it is not a sustainable solution.

A minor 2% tier upgrade simply will not provide enough of a gain to close the current horsepower gap to the class-leading Mercedes engines.

Ferrari’s Brutal 4% Reality​


To actually bridge the gap and get back on equal footing, Ferrari needs to push for a 4% ADUO homologation. However, stepping up to that tier requires a completely different level of commitment.

The report notes that a 4% upgrade means all new power unit components must be fully validated on a dynamic test bench. This process requires a significantly more substantial budget and a massive amount of extra time—resources that couldn’t be anticipated without risking the compromise of their entire end-of-season development program.

Ultimately, Ferrari is stuck between a rock and a hard place. They need two successive homologations to significantly reduce their engine power deficit, meaning they have to play the long game.

Monaco’s tight, low-speed layout might mask their engine lag this weekend, but when the grid heads to power-hungry tracks later this summer, Maranello’s development choices are going to be put to the absolute test.

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