Ferrari F1’s engine chief Enrico Gualtieri outlines the biggest challenge for 2026 engines. Enrico Gualtieri, Ferrari F1’s engine chief, explains the key challenge of the new 2026 F1 engines .

Enrico Gualtieri, Ferrari’s engine director, has shared his insights on what will be the main challenge for the new 2026 Formula 1 power units.

There is huge anticipation ahead of a season that promises a major technical revolution, both in terms of aerodynamics and engine design. While the aerodynamic changes are relatively clear to teams and fans, the new 2026 engines remain more complex and uncertain. In this context, Enrico Gualtieri, Ferrari F1’s engine chief, has provided a closer look at the challenges that lie ahead.

The engines themselves are undergoing a significant transformation aimed at improving sustainability. Starting this year, Formula 1 will introduce biofuels—renewable fuels derived from biomass, organic waste, used vegetable oils, or animal fats. According to Gualtieri, these fuels represent a critical challenge for the teams. He elaborated on this in an exclusive interview with the media following the SF26 presentation.

How the fuel is changing

Gualtieri began by saying: “Regarding the new fuel, an advanced sustainable fuel, we should note that it does not represent a major change in terms of its final composition.” This means that the composition itself is not the main challenge. He added: “The fuel is designed almost like before, because ultimately what matters are the molecules and the properties they can achieve. So, the engine’s appetite doesn’t change significantly, which means fuel design is almost similar to what we were used to in the past.”

However, there is one aspect that will be crucial for the 2026 engines: “The real major change compared to previous seasons is that now the fuel must comply with supply chain restrictions.” But that is not all—the choice of raw materials is equally important. “The raw materials from which the fuel is derived must be original for sustainability reasons. This is an additional factor to consider, alongside the performance and efficiency that we have always pursued in fuel design.”

For Enrico Gualtieri, this represents the biggest challenge for the new 2026 F1 engines, including for Ferrari: “This is definitely something that has changed the way we and the fuel suppliers approach the correct design of fuel.”

In short, while the molecular structure of the fuel remains largely similar to previous years, the sustainability requirements and sourcing restrictions introduce a new layer of complexity. Teams will need to adapt their engine and fuel strategies accordingly, ensuring that performance and efficiency goals are met while complying with the new ecological standards.