F1 leaders Mercedes granted engine upgrades, none for Red Bull

The FIA’s findings revealed that Mercedes, despite their early-season dominance and commanding lead in both the Constructors’ and Drivers’ championships, qualified for one additional engine homologation in 2026 and another in 2027. These crucial development opportunities come with corresponding increases in their cost cap allowance and dyno testing hours, providing the Anglo-German outfit with a significant lifeline to further refine their power unit. The very premise of a championship-leading team receiving development concessions might seem counter-intuitive, but it underscores the complex, data-driven nature of the ADUO regulations designed to prevent a single manufacturer from establishing an insurmountable advantage.

The ADUO mechanism, a cornerstone of the 2026 power unit regulations, was specifically conceived to foster closer competition and ensure that no single power unit manufacturer could run away with a significant performance advantage without rivals being able to respond. It grants Formula One power unit manufacturers additional development opportunities if the performance of their internal combustion engine (ICE) falls at least 2 per cent below the sport’s best-performing one across defined review periods. This threshold is not merely an arbitrary figure but is meticulously calculated based on a comprehensive analysis of various performance metrics, including peak power output, energy recovery system (ERS) efficiency, fuel consumption, and overall power delivery across different track simulations. The intention is to identify underlying technical disparities that might not always be immediately apparent in race results, which can often be skewed by chassis performance, driver skill, strategy, or operational execution.

The first review period under ADUO concluded after the Canadian Grand Prix in May, while the second assessment wrapped up following the Hungarian Grand Prix in late July. These two distinct windows allowed the FIA to gather extensive data from all manufacturers across a variety of circuit types and conditions, ensuring a robust and representative performance evaluation. During the initial period, Mercedes was determined to be operating within the 2-4 per cent performance window relative to the benchmark, thus qualifying for the allocated upgrades. In contrast, Audi, Ferrari, and Honda were found to be performing more than 4 per cent below the sport’s perceived best power unit, consequently earning them two additional homologations in 2026 and a further two in 2027. This multi-tiered approach highlights the FIA’s commitment to addressing different levels of performance disparity, providing greater assistance to those furthest behind.

The most surprising revelation, and indeed the focal point of much of the paddock’s discussion, was the implied designation of Red Bull’s power unit as the benchmark. While Red Bull Powertrains (RBPT) – in collaboration with Ford – was not explicitly mentioned in the FIA’s public statement regarding ADUO recipients, their absence from the list of those granted concessions unequivocally confirms their engine, also supplied to sister team Racing Bulls, was considered the strongest performer based on the FIA’s intricate metrics. This assessment presents a stark paradox: Red Bull, after 12 rounds of the 2026 season, sits fourth in the Constructors’ Championship, a staggering 239 points off the lead, and remains winless. Their star driver, four-time world champion Max Verstappen, has voiced frustrations with the car’s overall package, leading many to question how their power unit could be simultaneously classified as the sport’s best.

Industry analysts suggest that the FIA’s evaluation likely delves deeper than raw race pace, focusing on the sheer potential and technical specifications of the power unit in isolation. It’s plausible that while the Red Bull-Ford unit demonstrates superior dyno figures, thermal efficiency, or electrical deployment capabilities in controlled environments, the team’s chassis design, aerodynamic integration, or operational teething issues with a brand-new, in-house power unit might be preventing that raw engine performance from translating into on-track results. This nuanced distinction highlights the complex interplay between a power unit and the overall car package, a relationship often overlooked in superficial performance assessments. For RBPT, 2026 marks their inaugural season with a fully in-house developed power unit, a monumental undertaking that naturally comes with initial integration challenges. The FIA’s assessment, therefore, acknowledges the fundamental strength of their engineering, even if the comprehensive package isn’t yet delivering wins.

Conversely, Mercedes’ situation presents an intriguing contrast. The Silver Arrows have enjoyed a stellar start to the 2026 season, leading Ferrari by 87 points in the Constructors’ standings. Their rising star, Kimi Antonelli, has been particularly impressive, securing five consecutive victories en route to a commanding lead in the Drivers’ Championship. Overall, Mercedes has won six of the season’s first 12 races. Furthermore, their customer teams are also performing strongly; champions McLaren, currently third overall and winners of the last two races, are powered by Mercedes engines, showcasing the perceived overall strength and reliability of the German manufacturer’s power unit. The optics of a dominant team receiving development aid naturally raised eyebrows across the paddock.

Indeed, the ADUO ratings had already leaked out after the first review period, causing considerable controversy and prompting Red Bull to seek clarification from the FIA in June. Red Bull’s concerns stemmed from the principle that more competitive rivals, particularly those already winning races, were being granted a development advantage, potentially undermining the spirit of fair competition. Max Verstappen’s candid reaction at the time encapsulated the paddock’s bewilderment: "We were all a little bit surprised with that news," he stated, reflecting a general sentiment of confusion given Mercedes’ seemingly unassailable position. This sentiment underscored the tension between the FIA’s data-driven, long-term strategic goals for engine convergence and the immediate, race-by-race competitive realities that teams experience.

For Audi, entering Formula One in 2026 as a new power unit manufacturer, and for established giants like Ferrari and Honda (who supply Red Bull’s former engine partner, AlphaTauri, now Racing Bulls), the additional homologations are vital. Being more than 4 per cent behind the benchmark signifies a substantial performance deficit, and these extra development tokens are critical for them to catch up. Audi’s commitment to F1 is a significant coup for the sport, and ADUO provides a crucial safety net, ensuring they are not immediately left behind by more experienced manufacturers. For Ferrari and Honda, these upgrades offer a chance to reignite their championship aspirations and close the gap to the perceived leaders.

It is worth noting that no additional homologations were granted for the second review period, indicating that the performance gaps, while still existing, did not widen or shift significantly enough to trigger further upgrade opportunities for any manufacturer. This suggests a certain stability in the relative performance standings between May and July.

Nikolas Tombazis, the FIA’s single-seater director, robustly defended the governing body’s findings, emphasizing that the analysis had been "thorough and exhaustive." He expressed confidence in the integrity and accuracy of the ADUO mechanism, acknowledging, however, that as this is the first year of its implementation, "naturally there are areas which we may evolve over time, in discussion with all the PU Manufacturers." This statement hints at the dynamic nature of such regulations, which may require adjustments based on real-world feedback and unforeseen consequences. The FIA’s challenge lies in striking a delicate balance: promoting technological innovation while simultaneously preventing runaway dominance, a lesson painfully learned during various eras of Formula One, most notably Mercedes’ unchallenged hybrid era supremacy.

The ADUO mechanism, while complex and at times seemingly contradictory to immediate race results, represents a forward-thinking approach to ensuring the long-term health and competitiveness of Formula One. By focusing on underlying technical performance rather than just superficial track positions, the FIA aims to create a more level playing field for engine development. The current situation with Mercedes receiving upgrades despite leading, and Red Bull being deemed the benchmark despite being winless, serves as a powerful illustration of the intricate layers of modern Formula One regulation. As the 2026 season progresses and the new engine era truly takes hold, the effectiveness and fairness of ADUO will continue to be a hot topic, shaping the competitive landscape for years to come.