Christian Horner says he will not blame Adrian Newey for the issues faced by Red Bull with its new car.

Red Bull completed just 21 laps in total at the first pre-season test at Jerez as issues with the cooling on its RB10 allied to Renault power unit problems prevented any meaningful running. The Red Bull was tightly packaged in its launch spec compared to the likes of the Caterham - which completed 76 laps - and the Toro Rosso (54 laps), both of which were also Renault-powered.

Asked by Sky Sports if he felt Newey's approach was the main reason for Red Bull's problems, Horner replied: "No, no.

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"I think there are a few things that we needed to tidy up on our side but nothing major. Obviously Renault have got some issues that they are tidying up as well but these cars are so complicated that little problems can cause big failures."

And Horner also said there was no cause for panic yet with five weeks still to go until the first race in Australia.

"Well obviously there's quite a bit to do but there's still a fair bit of time before the first race and the Bahrain test next week is an important test so obviously everyone is working very hard in Renault and in Milton Keynes.

"We don't want another week like Jerez but that's what testing is for; you sort your problems out in testing so as not to have them at the races."