Austin, Texas - Sebastian Vettel welcomed Ferrari’s return to form in Sunday’s United States Grand Prix, but said the team had taken too long to realise the mistakes in its development programme.
The four-time champion German, who kept alive his faint title hopes by finishing fourth behind championship leader Lewis Hamilton of Mercedes, said the team did not understand what was wrong with its upgrades.
Ferrari abandoned its recent updates and reverted to older car specifications at the Circuit of the Americas and was rewarded with Kimi Raikkonen’s first win for the team since 2009.
Vettel’s hopes of a victory to reboot his title bid were wrecked when he clashed with Daniel Ricciardo’s Red Bull on the opening lap.
Of Ferrari's victory, he said: “You can see it is good news, but you can also see it is bad news. It took too long.