Red Bull's Sebastian Vettel and Ferrari's Fernando Alonso said they are excited about the climax to their title battle in Brazil next weekend.
Vettel heads into the race at Interlagos on 25 November as favourite with a 13-point lead over Alonso and a faster car.
"We are in the best possible position," said Vettel, who has won and finished second in Brazil in the last two years.
Alonso said: "We'll do our best, fight all race and see what is the outcome."
To stop Vettel winning the title, Alonso must win with Vettel lower than fourth, be second with Vettel below seventh or third with Vettel lower than ninth.
Alonso said: "We will go to Brazil with the possibility to fight for the championship, which is something that we have fought for all year, and we have arrived in that fantastic position.
"Only Sebastian is in a better position than us but we should be proud of ourselves so try to enjoy the Brazil race."
Vettel said: "The car seems to work very well, good enough to fight for a win."
Alonso managed to keep the title fight alive despite starting only seventh in the United States Grand Prix on Sunday.
He was fourth by the time the field had rounded the first corner and took third when Vettel's team-mate Mark Webber retired with an alternator failure.
"It is what we wanted," Alonso said. "Obviously we had a tough weekend, so many difficulties. We were not competitive, we did not have the pace, and Red Bull was very quick and everything was smooth for them.
"Arriving on Sunday afternoon losing only three points was like a victory for us, but we need to think of Brazil take all the opportunities we can have there.
"Today we saw [the] Webber retirement. Sometimes it is the water, sometimes the Kers, sometimes the alternator but always in that car, so maybe one day it happens in the other car and we need to be ready."
Vettel admitted Webber's car failure was "not good news" but said he felt it "should be easy to find the problem". He added: "We should be prepared for next week."