In a recent announcement, the FIA has designated Red Bull Racing’s power unit as the top engine in Formula 1, under the Additional Development and Upgrade Opportunities (ADUO) system. This ruling is set to impact upgrades for competing manufacturers, particularly Mercedes and Ferrari, during the 2026 racing season.
FIA’s Judgment on Engines
Teams were informed of the FIA’s engine hierarchy on the day of the Monaco Grand Prix. This initial assessment stratified manufacturers based on their power units’ performance. Under the ADUO system, if a manufacturer’s engine is assessed to be more than 2% behind the benchmark, they can request one upgrade in 2026 and another in 2027. Those with a deficit of 4% or higher can apply for two upgrades each season.
Details of Engine Performance Assessments
Despite Mercedes being historically successful and often viewed as the benchmark, the Red Bull Powertrains engine—branded by Ford—has been classified as superior under the FIA’s ADUO criteria. The specific metrics supporting this judgment are not disclosed in detail within the regulations. The FIA is cautious about potential manipulation of the system by teams that might design engines to exploit loopholes.
- Evaluation Criteria: Only the internal combustion engine contributes to the ADUO assessment.
- Exclusions: Energy harvesting, deployment efficiency, and management systems do not factor into the classification.
Impact on Upgrades and Financial Support
The ruling means that Red Bull, having been acknowledged as the best engine, is not eligible for ADUO upgrades. Mercedes qualifies for one homologation upgrade since it is over 2% adrift. Meanwhile, other manufacturers, including Ferrari, will receive two homologations because they are classified as over 4% off the target.
The breakdown of additional allowances based on performance deficits is significant:
| Deficit Percentage | Additional Allowance ($) | Bench Testing Hours |
|---|---|---|
| 2% – 4% | $3 million | 70 hours |
| 4% – 6% | $4.65 million | 100 hours |
| 6% – 8% | $6.35 million | 150 hours |
| 8% – 10% | $8 million | 190 hours |
| Over 10% | $11 million | 230 hours |
This structured financial assistance aims to level the playing field for manufacturers struggling against Red Bull’s performance. The competitive landscape in Formula 1 is evolving, with these developments set to shape the strategies of teams as they prepare for the upcoming season.
