Red Bull is considering taking over Honda's Formula One engine project when the manufacturer quits the championship at the end of 2021.
Honda's decision to leave the sport has left Red Bull and junior team Alpha Tauri without an engine supplier for 2022 onwards. Mercedes has already ruled out supplying Red Bull, leaving a return to former partner Renault looking like its most realistic option of F1's three remaining suppliers.
As an alternative option, Red Bull is exploring the possibility of stepping when Honda leaves and running the engines itself. However, Red Bull motorsport advisor Hemlut Marko said this would require a tweak to the existing regulations.