Sebastian Vettel says that with so many different parties involved, no agreement has yet been reached on 2026 engines.

Formula 1 has stated its intention for a new generation of power units to be introduced from 2026, with a focus on reduced costs, more electrical power and the use of sustainable fuel.

The Volkswagen Group is preparing to send its Porsche and Audi brands to the series from that year, though Vettel confirmed that no finalised set of regulations have been agreed.

The four-time World Champion recently flagged up another potential avenue for F1 to pursue, that being a return to normally-aspirated engines, after he conducted a demo run at Silverstone in Nigel Mansell’s Williams FW14B, powered by a fully-sustainable fuel.

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