McLaren's Carlos Sainz has been forced to take on a new MGU-K for the Bahrain Grand Prix this weekend following the reliability problems which struck the Spaniard during the season-opening Formula 1 race in Australia. Sainz retired from the race on Lap 11, which he said was 'not good enough' from engine supplier Renault and has urged them to improve their reliability this year, describing it as a 'weak point' of the McLaren MCL34. 'It felt like we are getting good power in both conditions, race and qualifying, our top speed last year was around 10 to 12 kph down and this year we are only two or three kph down, partly down to downforce but also as the engine has improved....
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