Jean Todt has said that he is "half-positive" about how the first half of Formula 1's 2017 season has gone.
After eight races, most are thrilled with the new cars and the championship battle, and FIA president Todt told Germany's Sport Bild it has been "great".
"I'm half-positively surprised by the season," said the Frenchman.
"Half-positive, because it would have been a really good surprise if not only two but four teams were fighting for the world championship. But, after all, it is great that we do not know who will win the next race.
"Formula 1 needs action and emotions, and the two of them are doing that at the moment."
Mercedes have won the past three F1 titles, but Todt thinks that his old team Ferrari might now be ready to succeed again.
"Ferrari has done amazing work and yes, I think they can be competitive all year through," he said.
"Vettel's approach reminds me a bit of Michael's. The professional working, the ability to pull a team together, and like Vettel, Michael did not like to lose."
The season continues next weekend with the Austrian Grand Prix.