Adrian Newey, Red Bull's Chief Technical Officer, looked back on the start of the Formula 1 turbo hybrid era, and his team's fall from grace after Renault got it wrong with their new power unit.
What made matters more difficult for Red Bull, is that the turbo era followed a period of utter domination by the team and Sebastian Vettel securing four consecutive Title doubles between 2010 and 2013.
But then things went stumbling for the team, as with the new power unit regulations, Renault dropped the ball big time, after mastering the V8 engines with their creative solutions and engines maps making the blown diffusers trick that gave Red Bull the edge, possible.
It was a tumultuous time for the Milton Keynes squad as they squabbled with Renault and it wasn't until they joined forces with Honda in 2019 - the latter exiting another poisonous relationship with McLaren - until a light at the end of the tunnel could be seen.
Pretty depressing times for Red Bull
Speaking to F1's official website, Newey reflected: "[You need to] have a decent engine. We went into the hybrid era and Renault got it wrong, so that was pretty depressing.
"You realised that in your foreseeable future if you do a spectacular job, you might snatch the odd win, but you’re never going to win a championship," he added.
"That was a reset. I think one of the strengths of the team is that we put our heads down and got through that period, so that when once we had a good power unit again with a partnership with Honda, we were able to respond," the British engineer explained.
Christian Horner commented on the same topic, he said: "The most important thing was keeping the team together, focusing on the things we could control. We had great loyalty during that period.
"Honda shared the same passion, we took that risk, and we were then able to really start to get the foundations in place for a championship challenge," the Red Bull boss recalled.
Red Bull started an upward curve with Honda, but it wasn't until 2021 until they could launch a full Title attack, one which they emerged from victorious in the Drivers' Championship, with Max Verstappen bagging his first F1 Title.
In 2022 however, the team was fully dominant seeing off an early challenge from Ferrari
to take both Drivers' and Constructors' Titles.