Ferrari Formula One boss Mattia Binotto has handed in his resignation and will leave at the end of the year, the championship runners-up said on Tuesday.
The news came after considerable media speculation that the 53-year-old, whose contract was due to expire at the end of 2023, had lost top level support after another failed title challenge.
"With the regret that this entails, I have decided to conclude my collaboration with Ferrari," the Italian sportscar manufacturer quoted Binotto as saying in a statement announcing his departure.
"I am leaving a company that I love, which I have been part of for 28 years, with the serenity that comes from the conviction that I have made every effort to achieve the objectives set.
"I leave a united and growing team. A strong team, ready, I’m sure, to achieve the highest goals, to which I wish all the best for the future. I think it is right to take this step at this time, as hard as this decision has been for me."
Ferrari said they had started the search for a replacement, likely to be finalised in the New Year.
Italian media have suggested Ferrari Chief Executive Benedetto Vigna could take on the role on an interim basis.
Frederic Vasseur, a Frenchman who runs Swiss-based Sauber and is principal of the Alfa Romeo team, has also been touted as a likely successor.
Ferrari made a strong start to this season after two years without a victory, but their hopes were dashed by mechanical unreliability, strategy errors and driver mistakes.
Although the Maranello-based team won four races, with Charles Leclerc taking three victories and nine pole positions to Carlos Sainz's sole triumph, they were distant runners-up to dominant Red Bull and Max Verstappen.
Leclerc finished second overall, 146 points behind now double world champion Verstappen.
Binotto spent his whole career at Maranello and was appointed team boss in January 2019, replacing Maurizio Arrivabene.
The sport's oldest and most successful team, present in every championship season since the first in 1950, slumped to sixth overall in the 2020 constructors' standings but recovered to third in 2021.
