McLaren expect more of a challenge from rivals Ferrari and Mercedes at the weekend's Malaysian Grand Prix.
Fernando Alonso and Felipe Massa were fourth and seventh for Ferrari in the season opener at Melbourne, while the Mercedes cars failed to finish.
Ferrari and Mercedes to be faster in Malaysia - McLaren
Ferrari and Mercedes to be faster in Malaysia - McLaren
Ferrari and Mercedes to be faster in Malaysia - McLaren
Ferrari and Mercedes to be faster in Malaysia - McLaren
Ferrari and Mercedes to be faster in Malaysia - McLaren
Ferrari and Mercedes to be faster in Malaysia - McLaren