• Austrian key to Vettel and Verstappen title wins

• ‘Now is the right moment’ says 82-year-old

Red Bull’s influential auto racing adviser Helmut Marko is retiring from his role at the age of 82, ending a 20-year stint in which he helped Sebastian Vettel and Max Verstappen develop into four-time Formula One world champions.

Marko’s departure leaves Red Bull without the two main guiding personalities from its 2005 entry into F1 after the team principal Christian Horner was ousted in July and replaced by Laurent Mekies.

• Austrian key to Vettel and Verstappen title wins

• ‘Now is the right moment’ says 82-year-old

Red Bull’s influential auto racing adviser Helmut Marko is retiring from his role at the age of 82, ending a 20-year stint in which he helped Sebastian Vettel and Max Verstappen develop into four-time Formula One world champions.

Marko’s departure leaves Red Bull without the two main guiding personalities from its 2005 entry into F1 after the team principal Christian Horner was ousted in July and replaced by Laurent Mekies.

• Austrian key to Vettel and Verstappen title wins

• ‘Now is the right moment’ says 82-year-old

Red Bull’s influential auto racing adviser Helmut Marko is retiring from his role at the age of 82, ending a 20-year stint in which he helped Sebastian Vettel and Max Verstappen develop into four-time Formula One world champions.

Marko’s departure leaves Red Bull without the two main guiding personalities from its 2005 entry into F1 after the team principal Christian Horner was ousted in July and replaced by Laurent Mekies.