Formula 1’s MGU-H Dilemma: Jean Todt’s Pragmatic Stance on a “Beautiful Piece of Art” for F1’s Future

Formula 1 stands at a pivotal crossroads as it charts the course for its engine regulations beyond 2020. Central to this debate is the highly complex and technologically advanced Motor Generator Unit – Heat (MGU-H), a component FIA President Jean Todt reverently describes as “a beautiful piece of art, of technology.” Yet, despite his admiration for its engineering prowess, Todt has expressed a pragmatic willingness to see it removed from the sport’s power units if doing so could pave the way for new manufacturers to enter Formula 1.

The proposed overhaul of F1’s rules for 2021 by Formula One Management (FOM) includes the contentious suggestion of scrapping the MGU-H. This unit, responsible for recovering waste heat energy from the exhaust and converting it into electrical power, represents a significant proportion of an F1 car’s electrical energy—more than half, according to Todt. Its removal would signify a substantial shift in the sport’s technological direction, moving away from an element that has defined the current hybrid era since its introduction in 2014.

The MGU-H: A Marvel of Modern Motorsport Engineering

The MGU-H is undeniably one of the most sophisticated and efficient technologies ever developed for motorsport. It operates by capturing kinetic energy from the turbocharger’s exhaust gases, which would otherwise be wasted as heat. This recovered energy is then used to generate electricity, which can either be stored in the battery or directly deployed to power the MGU-K (Motor Generator Unit – Kinetic) for additional boost. Beyond its energy recovery capabilities, the MGU-H also plays a crucial role in mitigating turbo lag, effectively acting as an advanced anti-lag system by controlling the speed of the turbocharger. This allows for instant power delivery, enhancing driveability and performance.

For current manufacturers like Mercedes, Ferrari, Renault, and Honda, the MGU-H has been the focus of immense research and development investment over many years. Teams have poured hundreds of millions into perfecting its design, integration, and operational efficiency, pushing the boundaries of internal combustion engine technology. Its contribution to the overall thermal efficiency of the power unit is remarkable, accounting for approximately 5% of the total thermal efficiency and generating 60% of the electrical energy to power the MGU-K. This makes it a cornerstone of the current hybrid power units, embodying Formula 1’s role as a cutting-edge laboratory for automotive innovation.

Todt has consistently emphasized the importance of Formula 1 remaining a relevant “laboratory” for road car development, allowing manufacturers to use the pinnacle of motorsport to refine technologies that eventually trickle down to consumer vehicles. The MGU-H perfectly embodies this philosophy, showcasing advanced hybrid solutions that push fuel efficiency and performance in extreme conditions. However, the complexity and cost associated with this technology have also created a significant barrier to entry for potential new manufacturers, leading to a smaller pool of engine suppliers in the sport.

The Case for Simplification: Attracting New Blood to F1

Despite the MGU-H’s technical brilliance, the FIA President acknowledges a growing sentiment that its complexity might be detrimental to the sport’s broader appeal and long-term sustainability. “I think and I hear it’s maybe not what the fans are expecting and it’s not something which is absolutely needed to have a good championship,” Todt remarked. This perspective underscores a critical balancing act: preserving Formula 1’s reputation as a technological leader while ensuring it remains an exciting, accessible, and competitive spectacle for fans and potential new entrants alike.

The core argument for removing the MGU-H revolves around simplification and cost reduction. Developing and integrating this specific piece of technology has proven incredibly challenging and expensive, creating a steep learning curve and financial hurdle for any new manufacturer contemplating an F1 entry. By eliminating the MGU-H, FOM and the FIA aim to create a more level playing field, reducing the upfront investment required to design a competitive F1 power unit. This strategic move is specifically designed to attract new engine suppliers, a goal Todt openly supports, stating he “hopes it may create some interest from new manufacturer or manufacturers.”

One prominent potential entrant, Aston Martin, has already made its position clear: it will only consider entering Formula 1 as an engine supplier in 2021 if the MGU-H is scrapped. This ultimatum highlights the direct impact of this single component on the landscape of future engine suppliers. The prospect of bringing an iconic brand like Aston Martin into the sport’s engine manufacturing ranks is a powerful incentive for the FIA and FOM to consider radical changes, even if it means stepping “a bit backwards” on certain technological fronts, as Todt suggested. The ultimate objective is to foster a healthier, more competitive environment with a greater diversity of engine options and manufacturers.

The Counter-Argument: A “Backwards Step” for F1

Naturally, the proposal to remove the MGU-H has met with significant resistance from existing manufacturers, particularly those who have invested heavily in its development and integration. Andy Cowell, Mercedes’ esteemed Director of High-Performance Powertrains, has been a vocal critic of the plan, describing it as a “backwards step” for Formula 1. His arguments are rooted in the significant technical and performance implications of such a change, emphasizing the technological regression it would represent for a sport priding itself on innovation.

Cowell highlights that the MGU-H is not merely a complex gadget but a vital component contributing significantly to the current power units’ efficiency and performance. “There are four technology companies that have made it work and get 60% of their electrical energy to then power the [MGU-K],” he stated. “It contributes 5% of the thermal efficiency of the power unit and to make up the power difference we’re going to have to increase the fuel flow rate, which I think is a backwards step. It’s not progress.” Removing the MGU-H would necessitate a higher fuel consumption to achieve comparable power outputs, seemingly contradicting the sport’s direction towards greater efficiency and sustainability.

Furthermore, Cowell pointed out the unintended consequences of removing the MGU-H. Its role as an anti-lag system is critical for turbo engine performance. With its removal, teams would be forced to spend money developing alternative anti-lag solutions. “We will all now start developing anti-lag systems. The MGU-H is the most marvellous anti-lag system on a turbocharged engine because it gives you speed control. That’s been removed so we’ll now have to come up with various devices and systems and that will probably involve burning some fuel in the exhaust which doesn’t feel like the most honourable thing to do, as an engineer.” This concern underscores that while the intent is simplification and cost reduction, the reality might be a mere redirection of development resources and costs, potentially leading to less efficient and less “honourable” engineering solutions.

The established manufacturers argue that having already completed the extensive and costly development work for the MGU-H, removing it now effectively nullifies their investment and expertise. It’s a challenging proposition to accept, especially when the technology has proven to be so effective and efficient. The dilemma thus pits the desire for technological purity and progress against the commercial and competitive health of the sport.

Charting F1’s Future: Balancing Innovation and Accessibility

The debate surrounding the MGU-H is emblematic of the broader challenges Formula 1 faces in defining its identity for the coming decades. How does the sport maintain its allure as the pinnacle of motorsport engineering, a genuine “laboratory” for automotive technology, while simultaneously ensuring it remains an attractive and viable platform for a diverse range of manufacturers and teams?

The decision on the MGU-H will have profound implications not only for the power unit architecture but also for the sport’s commercial appeal, its environmental credentials, and the overall competitiveness of the grid. While Todt believes that “over the years I’m sure the engines will be even more efficient without MGU-H” through other innovations, the path to achieving this without compromising performance or increasing costs in other areas remains a complex engineering and regulatory challenge. The sport must find a delicate balance between pushing technological boundaries and making those technologies accessible enough to encourage participation and foster a vibrant, competitive environment.

Ultimately, the negotiations for the 2021 regulations are a testament to the dynamic nature of Formula 1, where technology, sport, and business constantly intersect. The MGU-H, a component once hailed as a beacon of engineering excellence, has become the symbol of this intricate balancing act, determining whether the sport leans more towards cutting-edge complexity or a simplified path to broaden its appeal and secure its future.