Red Bull team principal Christian Horner doubts Formula 1 will be able to introd✅uce a new set of engine regulations until 2023 at the earliest despite long-held plans to make changes two years earlier.

F1 has identified 2021 as the year it is keen to introduce a raft of new sporting and technical regulations, as well as overhau꧂ling the commercial structure of the sport as part of a push to encourage competition and improve th♓e on-track spectacle.

Some guidelines regarding the planned power unit regulations for 2021 were released 🌜in April, but no concrete details hav🅠e since followed.

F1 technical boss Ross Brawn wrote in the programme for this weekend’s Belgian Grand Prix that it may be worth ⭕postponing the introduction of the new engine rules ꦅ“until we can be certain that a major regulation change will bring fish blood into the sport,” referring to new manufacturers.

Red Bull chief Horner supported Brawn’s view, saying that it was not wort🐽h rushing the new engine rules only to keep the existing manufacturers in F1 at an added expense.

“I think at the mome🅰nt our🐟 situation is different to where it was two or three months ago,” Horner said.

“Stability i☂s important. There’s no new manufacturers coming in, these regulations are impossible for a new manufacturer, should they come in.

“I think that rather than making a half-hearted change and getting it half right🌼, I think it’s better to ta𒈔ke a little bit more time to really consider what is the right engine for Formula 1 moving forward.

“If that needs a bit more time, or a couple more years to achieve that, then th🌸at’s the sensible approach.”

Asked how long he thought it would take to plan out, Horner said: “I think at the moment now I can’t ꦆsee anything changing befor꧂e the 2023 season, to be honest with you.”

Renault F1 boss Cyri☂l Abiteboul also said that F1 should be careful in trying to do too much at once, with three overhauls - sporting, technical and commercial - all currently being lined up for one year.

“I think what Fo🥀rmula One 🐬is trying to do for 2021 is extremely ambitious. It may be required, but it’s extremely ambitious,” Abiteboul said.

“It will be the first time in F1 history I believe that we would at thﷺe same time🍸 change chassis regulations, engine regulations, Concorde Agreement, governance structure, new budget cap.

“That’s a lot. There might be the risk of trying to embrace too much and🌳 not produce and deliver anything.

“Our view would be to try and be a bit more pragmatic and focus on what is the main emergency for Formula 1, and I’m thinking really of the🉐 show, of the disparity between the ⛦teams, the disparity in the revenue.”