FIA announces ADUO results following first and second review periods of 2026

FIA announces ADUO results following first and second review periods of 2026

Sport news

Additional Development and Upgrade Opportunities (ADUO) is a mechanism within the 2026 Formula 1 Technical Regulations (Article C4) allowing Power Unit manufacturers whose Internal Combustion Engine (ICE) performance falls at least 2% below the best-performing ICE across defined review periods to introduce additional homologated upgrades to their Power Unit during the current and following season, but also to benefit from additional Cost Cap and dyno testing allowances. The level of ADUO is calculated over three periods in each season, with the level of allowance determined by the size of the performance gap to the leading ICE. The first review period was concluded after the Canadian Grand Prix and the second review period concluded after the Hungarian Grand Prix.

The FIA can confirm that the results of the first and second ADUO analysis period of 2026 have been communicated to all Power Unit manufacturers.

For the first period:

  • Mercedes were determined to be in the 2-4% window, and will thus be allowed one additional homologation in 2026 and an additional one in 2027, together with corresponding cost cap and dyno testing increases.
  • Audi, Ferrari and Honda were determined to be above 4%, and will thus be allowed 2 additional homologations in 2026 and 2 in 2027, together with corresponding cost cap and dyno testing increases.

For the second period, no additional homologations were granted to any of the Power Unit Manufacturers.

Due to the confidential nature of this information, no further details on Power Unit performance index measurements will be communicated.

Nikolas Tombazis, FIA Director of Single Seater, said: “The FIA has undertaken thorough and exhaustive analysis as part of our ADUO review process. With the release of the findings of period 2, we are confident that, based on the quality of the data, its analysis is incredibly robust, giving us a high level of confidence in our findings. We also have to respect the confidentiality and intellectual property of the teams and their Power Unit Manufacturers in disseminating any details from the findings.

“This is the first year of ADUO so naturally there are areas which we may evolve over time, in discussion with all the PU Manufacturers”

The third ADUO review period of 2026 will cover races 12-18 (Netherlands to Mexico City).

ENDS

Note to editors: More information about ADUO can be found here.

FIA Formula One World Championship

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EDRC: No winners at Hockenheim as curfew prevents finals

EDRC: No winners at Hockenheim as curfew prevents finals

FIA news

A track clean-up following a fluid spill in one of the Sportsman classes caused a lengthy delay. With the venue’s 18:00 Sunday curfew preventing any further racing action from taking place, the Top Fuel, Top Methanol, Pro Modified and Pro Stock finals were called off.

Prior to the delay, spectators witnessed a day of competitive racing and several significant results. In Top Fuel, reigning FIA European champion Susanne Callin defeated RF Motorsport team-mate Colin Millar, winner of the previous round at Tierp Arena. Both drivers encountered traction issues, but Callin advanced with a 4.23-second pass.

In the other semi-final, number one qualifier Jndia Erbacher progressed after Øyvor Jacobsen red-lighted. Although Erbacher experienced problems and did not reach the finish line, she secured a place in the final alongside Callin.

Top Methanol was set to feature an all-Swedish final between number one qualifier Tony Bryntesson and A-Fuel Team Sweden team-mate Jonny Lagg. Bryntesson advanced after receiving bye runs in both the opening round and semi-final, the latter following engine damage sustained by Isak Lagg. On the opposite side of the ladder, Jonny Lagg defeated Germany’s Timo Habermann in a close semi-final, running 5.31 seconds to Habermann’s 5.38.

In Pro Modified, championship leader Andres Arnover reached the final after defeating Michel Tooren in the semi-finals. Tooren suffered tyre shake and a broken blower belt, while Arnover also battled traction issues before advancing with a 6.37-second pass. Arnover was due to face Norway’s Stian Rusånes, who secured his place in the final after defeating reigning FIA European champion Jere Rantaniemi.

Pro Stock saw the top two qualifiers progress to the final. Thirteen-time FIA European champion Jimmy Ålund defeated Henry Riehl in the opening round before recording a 6.59-second bye run in the semi-finals. Robin Norén advanced with victories over Stefan Ernryd and Michael Malmgren, posting runs of 6.62 and 6.63 seconds respectively.

The FIA European Drag Racing Championship now moves to its fourth and final round, the FIA European Finals at Santa Pod Raceway in Great Britain from 10–13 September.

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