Could Biofuels Bring Back V10 Engines to F1?

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Could F1 return to V10 engines in 2026? As F1 looks to update its fuel regulations, there are currently two leading contenders in the fight - biofuels and e-fuels. Both have their merits, but why would F1 want either of them? Other than a backing from Porsche, that is... Jake Boxall-Legge looks at why the fuels are a step up from the current 2022 E10 fuel, and whether Vettel's Biofuel FW14B could lead to F1 returning to iconic V10 engines in the future.