Jenson Button says McLaren will bring updates to the MP4-29 for the Malaysian Grand Prix after admitting that it is reliability rather than outright pace that sees them lead the Constructors’ Championship.

Engine and electronic problems on the final day of testing in Bahrain meant McLaren headed to Australia without having had the opportunity to trial their Melbourne updates. Instead the team concluded the 12 days of testing with only minor changes made to their launch-spec car.

However, despite a lack of testing time and a disappointing qualifying performance for Button as he exited in Q2, McLaren left Australia with a double podium finish following Daniel Ricciardo’s disqualification. The feat marked the first time a McLaren driver had been on the podium since the 2009 World Champion’s victory at the 2012 Brazilian GP.

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