The news leaves Red Bull and AlphaTauri without an engine constructor for the 2022 season and beyond but they will not go without.
The two options on the table for Red Bull are to potentially attract a new manufacturer to Formula 1 and, failing that, the regulations state that Renault, the constructor with the lowest numbers of customers, would have to supply Red Bull with power units.
Following the conclusion of the 2020 season, Renault will be without a customer team as McLaren will be powered by Mercedes again in 2021.
Renault and Red Bull have, of course, had a previous working relationship as Renault powered Red Bull’s cars from 2007 to the end of the 2018 season.
The partnership saw Red Bull four consecutive World Championship title doubles from 2010 to 2013 but the relationship notably soured when the wins and titles dried up before Red Bull jumped ship to Honda.