Red Bull has declared its winter testing programme a 'success' - at least compared to twelve months ago -, despite giving relatively little away about its form during the pre-season sessions.

Ahead of the 2015 Formula 1 opener in Australia, Red Bull Racing's ultimate pace remains questionable having opted to focus its efforts on developing the RB11 without chasing headline-grabbing lap times on the softer compound tyres.

Arguably of more concern though is the onset of niggling technical problems throughout pre-season testing, not least on the final day when ERS issues consigned lead driver Daniel Ricciardo to the pit lane for lengthy time.

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Despite this, Head of Race Engineering Guillaume Rocquelin says Red Bull can be pleased with its pre-season efforts, not least when it considers its position a year earlier when it went into the opening rounds having suffered a series of mechanical problems.

"It was a bit of compressed programme [on the final day] because of the electrical probles. It's a problem we've had before and one we are on top of, but it just takes time to fix, so that ruled us out for the rest of the morning. We crunched things down a bit in the afternoon and got in some short runs and long runs, so it was a useful day.

"In terms of the winter programme overall, I'd have to mark it down as a success, if only for the reason that we did about three times the mileage as this time last year! Overall, it's been very good. We spent the time focusing on what we need to do and not chasing lap time, because at the end of the day what you want to achieve is the development of a set of tools you can use through the season and that will help take you forward.

"We've done that. The balance of the car is good, the consistency is there, we've built in good reliability and the drivers are happy and I'm pleased with how things have gone. There's more to come in the next while but I think we're in decent shape for the first race."