Red Bull’s Bold Take: Fuel to Decide F1’s Future in 2026

Christian Horner believes F1’s 2026 shake-up hinges on synthetic fuel, marking the sport’s biggest technical shift in decades.

Christian Horner is aware of the challenge facing Red Bull Powertrains, which will put its first F1 engine on track next year. The Technical Regulations will change entirely in 2026, requiring adaptation to a new hybrid V6 and sustainable fuels that will play a crucial role.

“It’s a massive change,” Horner said. “It’s probably the biggest change F1 has seen in 50 years, with both chassis and engine regulations changing at the same time. That will inevitably create divergences.”

“It’s a significant set of regulatory changes—the relationship between the chassis and the engine, and how that plays out. It’s exciting for us to enter with our own engine in collaboration with Ford for 2026.”

“Certainly, fuel—switching to 100% sustainable fuel in 2026—is probably the biggest differentiator you’ll have. It’s exciting for us to work with ExxonMobil and see the progress being made in what will inevitably become a very competitive area.”

McLaren CEO Zak Brown expects to see larger performance gaps next year but points out that his team does not have a dedicated fuel supplier, as it uses those provided with the Mercedes engine. He knows McLaren will not have an advantage in this area.

“With the significant changes to the power unit, I believe that, just as race cars converge over time, power units will also converge over time,” said the American.

“I think there is a risk that the new regulations could further separate the field, and not just in terms of power units. This is a major design change.”

“I believe we are still assessing it. There are certainly concerns about ensuring we achieve a good balance in how we race.”

“It won’t be flat-out all the time. I don’t think that will be the case. It isn’t today, but it’s somewhat invisible to the fans. As for the fuel, we rely on HPP, which provides it to us.”