Renault Sport F1 president Jean-Michel Jalinier has retired after the French manufacturer's poor performing engines in 2014.
There has been widespread criticism of the company's engine this season, in response to the biggest rule changes in a generation, as they have seriously lagged behind the progress of Mercedes and Ferrari-powered cars.
Red Bull team principal Christian Horner, who oversaw four consecutive constructors' championship wins between 2010 and 2013 with Renault-powered engines, was among their harshest critics.
He has slammed the quality and reliability of engines this year, branding them: "unacceptable."
It was expected that heads would roll in response to the manufacturer's under-performance in 2014, and the resignation of Jalinier is seemingly no coincidence.
Jerome Stoll has been promoted to the position of president, with former Caterham team principal Cyril Abiteboul taking over as managing director.
They are the pair charged with producing a more refined, competitive engine for the 2015 season, in response to Mercedes' domination of this year's grid.
The new restrictions on fuel capacity for 1.6-litre V6 turbo engines was something that the German manufacturer clearly got to grips with quicker, as proved not only by the Mercedes works team's success this season, but also the progress made by Williams, who also rely on Merc-power.
Conversely, the toils Red Bull, Toro Rosso and Caterham have encountered have been rooted in a severely inadequate engine, which has rocked an entire division of a global manufacturer.
Teams are not permitted to make engine changes during mid-season, which means Renault's focus remains the long-term future and not merely implementing a short-term fix.
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