McLaren racing director Eric Boullier says the Spanish Grand Prix will "mark the start of a fresh push" within the team.

After an encouraging start to the season with a double podium in Australia, McLaren has failed to score in each of the last two races and was particularly uncompetitive in the Chinese Grand Prix. Boullier said the team has been working hard to understand the reasons for its recent lack of pace and intimated that the first steps to rectify it would be seen in Spain.

"For us, the weekend will be about learning, and hopefully moving on from our disappointing performance in China last month," Boullier said. "The root of our under-performance has been comprehensively analysed; we know the areas where our package falls short, and we've taken steps - both short- and long-term - to address those.

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"While not all of those will be in evidence in Barcelona this weekend, they mark the start of a fresh push and spirit within the whole organisation."

Boullier was also keen to emphasise that he felt both drivers had been performing well despite the lack of performance from the car.

"One thing we can be sure of is that Jenson [Button] and Kevin [Magnussen] will both be pushing to the limit. In China, it was difficult to watch two hard-pressing drives go unrewarded, but both drivers performed fantastically in Shanghai, and only lost out on points due to the inefficiency of our car.

"The McLaren Technology Centre has been bustling with intense focus and activity since our return from China, and I'm hopeful that we are on the right track to steadily start pushing ourselves back towards the front."