(CNN) -- World champion Jenson Button has warned his Formula One rivals that his in-form McLaren team are confident of securing a third successive victory at this weekend's European Grand Prix in Valencia.
McLaren recorded a one-two finish at the last two races in Turkey and Canada, completing a dramatic turnaround in the overall standings.
Button moved up to second place, three points behind McLaren team-mate Lewis Hamilton, with previous leader Mark Webber dropping to third ahead of Ferrari's Fernando Alonso and fellow Red Bull driver Sebastian Vettel.
McLaren also lead the constructors' championship on 215 points, 22 ahead of second-placed Red Bull and 54 in front Ferrari in third.
With a total of 25 corners, Valencia's Street Circuit is one of the most demanding on the Formula One calendar.
But Button feels there is no reason why McLaren cannot stretch their lead in Spain.
"As a team, we've taken maximum points in the last two races and it feels like we've really gathered considerable momentum," the Englishman told Formula One's official website.
"The team really is functioning as a single unit, so I think we head into Valencia hopeful of being able to once again capitalize on that determination and ambition".
