Jenson Button is confident he can challenge at the front in Suzuka after a solid showing in Friday's practices.
The Brit's Japanese Grand Prix weekend begun as it ended last season with a P1 as the 2011 winner topped the timesheets in Friday's first practice.
In the afternoon, Button lost out to his rivals, eventually finishing seventh, 0.856s behind pace-setter Mark Webber.
The Brit, though, is not at all concerned, saying he knows where McLaren went wrong in Practice Two.
"In P1 the car was good, in P2 we tried something that we couldn't go back on as it would take too long and it didn't really work for me that well," Button told Sky Sports.
"So we know how to put the car for P3 and with a few little improvements we can be competitive."
Looking ahead to Saturday's qualifying, the only session Button was not quickest in last season, the Brit said: "The car is working well here.
"I think it is going to be a competitive qualifying session, as I don't think any car really stands out at the front."