Former Red Bull motorsport adviser Dr Helmut Marko has branded the 2021 Formula 1 season as the "toughest year" during his time in the championship.<br>The 82-year-old left his role at the Milton Keynes outfit at the end of 2025 after a 20-year stint. Having raced in the championship from 1971 to 1972 and founding RSM Marko in 1984, which later became the Red Bull Junior Team, the Austrian has ...<a class='more' href='https://www.motorsport.com/f1/news/why-helmut-marko-says-the-2021-f1-season-was-his-toughest-ever/10791067/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>