Red Bull has confirmed it is to split from long-time Formula 1 commercial partner Infiniti at the end of the year.
Red Bull has made clear that as part of its renegotiated deal with Renault for the supply of power units in 2016, there will be no marketing activity for the Renault-Nissan alliance.
It is understood the financial arrangement with Infiniti, which ran from 2011-15, was worth in the region of $70million per annum.
Commenting on Infiniti's departure, Red Bull team principal Christian Horner said: "We would like to say a big thank you to Infiniti for their contribution to the team since they joined us as a commercial partner in 2011.
"They became the title sponsor of the team in 2013 when Infiniti enjoyed greater visibility than any other manufacturer in the sport.
"We wish them all the best with their plans for the future."