Christian Horner says the inability for Red Bull and Porsche to agree on a strategic alignment and the very different DNA of the two companies thwarted a deal between the two parties.
Over the past few months, Red Bull and Porsche held talks over a potential partnership that would have seen the German sportscar manufacturer acquire a 50% shareholding in Red Bull Technologies - an idea initially promoted by Red Bull owner Dietrich Mateschitz - and the naming rights to the Formula 1's 2026 power unit.
However, the two companies struggled to align their interests, with Red Bull ultimately unwilling to give up its independence and its decisionary flexibility for a more corporate approach.
In short, there was just too much that Red Bull would have been forced to give up in exchange for selling to Porsche half of its operations.
On Friday, Porsche announced that itself and Red Bull had jointly come to the conclusion that talks between the two companies would not be continued.
"Obviously with Red Bull becoming a powertrain manufacturer in 2026, it was always natural to hold discussions," Horner told Motorsport.com.
"Those discussions have now been concluded, and the consensus was that it was not right for Red Bull's involvement in F1."
Horner made clear that its in-house development of a next-generation F1 engine has never been "contingent" on a partnership with another manufacturer, be it Porsche or anyone else.
"We committed to becoming a powertrain manufacturer a year and a half ago, or just over that," he added.
"We've invested massively in facilities and people and the first Red Bull engine fired up approximately a month ago.
"So it's a tremendously exciting new chapter for Red Bull, and it's never been contingent or dependent upon an involvement from a third party or an OEM. That was absolutely never a prerequisite."
Horner said that financial considerations had never been discussed with Porsche. However, as talks unfolded it became clear that Red Bull and Porsche were very much governed by different DNA and strategic boundaries.
"There was never a financial discussion," he said. "Porsche is a great brand. But the DNA is quite different. During the discussion process it became clear that there was a strategic non-alignment.
"Red Bull has demonstrated what it's capable of in F1. And obviously, as an independent team and now engine manufacturer we look forward to go to competing against the OEMs with the powertrain as well as the chassis."
Looking ahead to the future, Red Bull motorsport boss Helmut Marko echoed Horner's comments regarding the team's engine independence.
However, Marko says that Red Bull has already received "inquiries" in the wake of the breakdown of its talks with Porsche.
"We don't need anyone at the moment," Marko told Austria's OE3. "But if it turns out that synergies and advantages come, then we are open.
"But surprisingly, we have received some inquiries now that the Porsche cancellation has become official."
Furthermore, Marko also alluded to its current technical partnership with Honda, which is set to run until the end of 2025. The Austrian isn't dismissing a prolongation of Red Bull's collaboration with the Japanese manufacturer beyond that term.
"We are talking to Honda," Marko said.
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