The FIA ​​has delayed publishing its inquiries into whether any teams breached the F1 budget cap in 2021

Red Bull team manager Christian Horner (centre) has strongly defended his team

Formula 1’s governing body has delayed publishing its inquiries into whether any teams breached the sport’s budget cap last year.

The FIA ​​told F1 teams last week that it planned to issue compliance certificates to F1 teams on October 5.

But the FIA ​​said in a statement on Wednesday that it was a “long and complex ongoing process”.

“On Monday, October 10, it would be decided to allow the release of certificates,” the statement said.

The delay is likely to upset the teams as they are all in Japan ahead of this weekend’s Grand Prix at Suzuka.

Japan is eight hours ahead of UK time and the teams were waiting for the FIA ​​results to be announced so they could give their answers. The statement was not released until 4pm in the UK, which is midnight in Japan.

And the new release date means that it will be made public whether any teams fill up on the day they are most likely to return to Europe from Japan.

Wednesday’s postponement is the fourth time the FIA ​​has given teams a date to back out.

Initially, the teams were told that the results would be released on Friday, September 30, Monday, October 3, and October 5.

The issue has become controversial in F1 after Mercedes and Ferrari said at last weekend’s Singapore Grand Prix that it was an open secret within the sport that the two teams had breached the $145m (£114m) limit.

Neither specifically named the teams in question, although Mercedes F1 team principal Toto Wolff referred to specific allegations about Red Bull.

Red Bull team manager Christian Horner reacted angrily to the rivals’ interventions, saying he considered the comments defamatory and would take further action if they did not withdraw.

Mercedes and Ferrari rejected Horner’s request.

Horner insisted he was “absolutely confident” in Red Bull’s submission to the FIA, adding: “We think we are comfortable within the cap.”

The FIA ​​said: “There has been significant and unsubstantiated speculation and conjecture surrounding this matter, and the FIA ​​reiterates that until this is resolved, no further information will be released.

“The FIA ​​also reiterates that any suggestion that sensitive information has been disclosed by FIA staff is unfounded.”

Under F1’s financial regulations there are two levels of offence: ‘minor’ and ‘material’.

The split between the two is 5% of the cap, or $7.25 million last year.

Senior sources have told BBC Sport that if any team is found to have been breached last year, the offense is likely to be minor.

The potential penalties for a minor offense are a reprimand; deduction of constructors’ or drivers’ championship points for the relevant year; suspension; limitations of aerodynamic or other tests; reduction of the cost limit of that group.

For a material failure, the possibility of being excluded from the tournament is included.

The budget cap was reduced to $140 million in 2022 and is dropping to $135 million in 2023. The exchange rate is fixed at a specific level of the pound;