Formula One engines - Wikipedia
https://en.wikipedia.org/wiki/Formula_One_enginesIn December 2021, Audi has written to the outgoing president of the FIA, Jean Todt, advising him of their intention to enter Formula One from 2026. This is when new engine regulations take effect to introduce more environmentally-friendly powertrains. The Volkswagen Group is evaluating entries from Audi and Porsche and is "close to the finishing line" in terms of its entry into F1. This would be the first foray of Porsche in Formula One since 1991.