(CNN) -- McLaren driver Lewis Hamilton has told CNN Sport's Alex Thomas that he needs a "perfect" final two races if he is to have any chance of capturing the 2010 Formula One world championship.
Hamilton is third in the driver standings heading into this weekend's penultimate grand prix at Interlagos in Brazil, 21 points behind current leader Fernando Alonso of Ferrari and he admits the pressure to succeed is at a season-long high.
"We've got two races ahead of us and everything has got to be perfect, perfect, perfect, so the pressure is greater than it's ever been," said Hamilton.
"I'm 21 points behind so it's not impossible, but it's going to be very tough. I really could do with two wins, that would be fantastic, or at least another win."
The 2008 world champion is known for his confidence and self-belief, but he was pragmatic when discussing his title chances, pointing to the unpredictable nature of Formula One as the reason for his cautious approach.
"We've had races where it's all looking good and everything happens so fast, the reliability of the cars is being pushed to the limit, the drivers are being pushed to the limit, and it's so easy to make a mistake.
"I cannot even begin to explain how easy it is to make a mistake. You're in the wrong place at the wrong time and there's nothing you can do about it, you can't rewind and go back."
With fellow-McLaren driver Jenson Button also still in with an outside chance of retaining his title, and the Red Bull duo of Mark Webber and Sebastian Vettel also firmly in the hunt, 25-year-old Hamilton knows he will have to fight hard to finish the season victorious.
"You've got the Red Bulls and Fernando who are the fastest and most consistent drivers at the moment, so they're the drivers I particularly want to be ahead of -- but generally I want to be ahead of everyone."
Teammates competing at the top of Formula One can cause problems, as witnessed when Vettel crashed into Webber after he tried to pass his Australian colleague at this season's Turkish Grand Prix.
But this is an issue Hamilton and Button have managed to avoid, with the British pair working together to improve their team's chances of success.
"We work really well as a team and together we push with the same force. Jenson tests one thing, I test another. We share everything...and that's how we progress twice as fast as maybe the others do."