Red Bull's team principal Christian Horner has hit out about the cost associated with the latest regulation change for Formula 1's 2023 season.

The FIA have decided to raise floor edges lifted by 15mm to help eliminate the porpoising phenomenon that plagued teams such as Mercedes last season. 

However, Horner has questioned the necessity of this regulation change as he feels the issue was rectified by the end of the 2022 season. 

Speaking to Auto Motor und Sport, Horner said: 'I think we have to wait and see, the first snapshot will be the testing in Bahrain.

'It's a little bit strange, because obviously there was a big push to get all of this changed, and the changes came through around Spa last year. But by the end of the year, there was very little porpoising.'

Horner added: 'My argument at the time was will it not just get sorted out, which it did. So we've gone through quite a lot of expense, for all the teams in a big regulation change that probably wasn't needed.'

However, Nikolas Tombazis - the FIA's single-seater director - held a slightly different view to Horner. He felt the changes were necessary ahead of the 2023 season. 

'I've got no doubt we did the right thing,' he said. 'We tried to find a pragmatic, short-term solution and a medium-term solution.'

The 54-year-old went on to add: 'It won't necessarily dissipate [porpoising] completely, but it will be a step less.'