Sebastian Vettel is already setting his sights on stopping Lewis Hamilton from winning yet another title in 2018.
In Mexico, Mercedes's Hamilton matched Vettel's career tally by securing his fourth driver's crown.
"Only very few athletes on the planet have four world championship titles in their pockets, so that must be honoured," Ferrari driver Vettel told Sport Bild.
"Looking at the season, Lewis was the better man and that's why he earned the title.
"You never know what will happen in the future. But next season I will do my utmost to keep Lewis from getting the fifth title.
"2017 was his year but 2018 is another story. Then everything starts again from zero.
"As Ferrari, we are on the right track and I firmly believe that we can be at the front in 2018."
That is despite the fact that most insiders agree that Hamilton is in excellent form.
However, Vettel insisted: "I am not afraid of Lewis.
"On the contrary, I like racing against him. Because if you win against a Lewis Hamilton, you're proud because you know that the level he drives at is extremely high."
Vettel also believes that Ferrari are up to the challenge of taking on not only Mercedes next year, but also Red Bull.
"We have to get even better, and we will," he declared. "After all, we know we're not fighting against Mickey Mouse and Donald Duck."
The penultimate race of 2017 takes place in Brazil next Sunday.
