https://www.the-race.com/formula-1/the- ... er-battle/
The huge 2026 F1 technology change that's going under the radar
Core Thesis: While media debate fixated on battery depletion ("super-clipping") and the 50/50 hybrid split, the shift to 100% sustainable fuel is the underlying factor governing engine performance.
Key Insights: According to BP motorsport fluids technology lead Luc Jolly, battery energy availability is inextricably linked to internal combustion engine (ICE) output. Because the ICE acts as a primary energy generator for the hybrid loop, the calorific efficiency of the bespoke fuel blend determines how much total energy a car can deploy across a lap.
https://www.motorsportmagazine.com/arti ... /?hl=en-US
F1's hidden fuel war: the 'boring' topic that could define its new era
Core Thesis: Terms the chemical development race between fuel suppliers (Aramco, BP, Petronas, Shell, ExxonMobil) the "hidden front" of the technical reset.
Key Insights: Sustainable feedstocks (synthetic e-fuels and municipal/agricultural waste) naturally present lower energy density, higher oxygen content, and combustion rate variability compared to fossil gasoline. Achieving knock resistance, rapid flame-front propagation, and batch-to-batch molecular consistency at high cylinder pressures is the single biggest performance differentiator among engine manufacturers.
The two key publications that covered these specific statements regarding Aramco’s 2026 F1 synthetic e-fuel program and their technical partnership with Honda (HRC) are:
Motorsport.com / Autosport
The Coverage: Highlighted statements from Aramco's technical leadership regarding their rapid development curve for the 2026 100% sustainable fuel regulations.
Key Details: The piece focused on Aramco claiming to have closed a massive development gap in just a few months—achieving octane, knock-resistance, and energy density metrics that legacy F1 fuel stalwarts (such as Shell, Petronas, and ExxonMobil) spent years refining through decades of continuous track data.
Formu1a.uno (also covered in depth by Formula1.it)
The Coverage: Detailed the direct engineering feedback loop between Honda Racing Corporation (HRC) in Sakura and Aramco’s fuel development lab in Dhahran/Paris.
Key Details: This analysis quoted Aramco technical representatives acknowledging that entering high-strung, 100% synthetic e-fuel formulation for Turbulent Jet Ignition (TJI) pre-chamber engines was uncharted territory for them. The article detailed how Aramco relied heavily on Honda’s single-cylinder test rig data and combustion kinetics guidance to learn the specific chemical properties required to optimize flame propagation and prevent auto-ignition under 2026 power unit constraints.
Of course Newey played up Aramco without really knowing the situation of F2 and F3 relevance:
https://sector.world/2026/02/how-f1-fue ... e-of-2026/
Aston Martin Aramco F1 team principal, Adrian Newey, outlined the big changes oil giant and technical partner Aramco had to make behind the scenes to produce fuels that fit the governing body’s specifications.
“They’ve had to reorganise. They’ve had to expand their facilities in certain areas to suit what is a very specific challenge: developing a fuel for an F1 team,” said Newey.
“Aramco is already experienced in this area as a supplier of low-carbon fuels to other formulas, such as F2, F3, and F1 Academy. Of course, F1 being what it is, we want to take their knowledge and expertise much further.”
This proven experience has given Aramco a head start, having developed sustainable fuels since 2022, and Newey believes this has been key to Aston Martin reaching the performance benchmarks of its Honda power unit.
“Aramco is absolutely pivotal for us here because of how they develop fuel, as are Valvoline, which is developing the oil, to suit the work Honda is doing and are a big part of a very complicated, but very important, equation.
“Without having a technical partner and fuel supplier with Aramco’s expertise, Honda’s development of the power unit would be restricted. That, in turn, would restrict us. The work Aramco are doing is going to stand us in very good stead.”
https://www.raceteq.com/articles/2026/0 ... ic-f1-race
“Now the big challenge for us is Formula 1 next year,” says Calendini.
“We are introducing FIA-compliant 100% Advanced Sustainable Fuel with Aston Martin Aramco Formula 1 Team and Honda to comply with new FIA regulations. It will be a very interesting year.”
“We’re the new challengers here and, in the space of a few years, we’ve accomplished what competitors have managed over decades.”
https://jp.motorsport.com/f1/news/f2-f3 ... /10686891/
Pierre-Oliver Carendini, Director of Aramco's Fuel Research Center:
As mentioned earlier, the fuel used in F2 and F3 is bio-derived. However, in the future, synthetic fuels will be produced using carbon dioxide captured from the air and hydrogen produced by electrolyzing water...... They aim to achieve so-called e-fuel. From 2026, it is highly likely that the fuel used in Aston Martin F1 will be this e-fuel.
"F1 and F2 use different fuels and regulations. After all, the engines aren't the same."
That's what Calendini says.
"Even if some components are the same, the fields we compete on are different."
"Depending on the engine regulations, the fuel itself can vary quite a bit. Motorsports...... Especially in F1, it's necessary to adjust the fuel composition to maximize power. Other competitors...... Shell, Petronas, and ExxonMobil are pushing their limits to deliver top performance.
"On the other hand, F2 and F3 use the same engine and the same fuel. You can balance performance."
However, in the fundamental aspect of producing sustainable fuel, it may be an advantage...... When asked this, Calendini explained:
"To be honest, that's not true. On the contrary, you could say that everything we do with our partners has helped us gain knowledge."
Aramco can talk the talk, but they'll have to prove they can walk the walk.
