Red Bull’s technical chief Adrian Newey has lost any hope of improvement from engine suppliers Renault after a disappointing start to the 2015 season in Melbourne. Not only the Renault unit is underpowered, it also lags behind rivals Mercedes and Ferrari in terms of drivability. To compound Red Bull’s troubles, Daniel Ricciardo lost one of his four power units during practice, essentially leaving him with just three engines for the 20 race season.“It's very frustrating that we've been pushed into a position where we've got an engine which is quite a long way behind with no obvious light at the end of the tunnel with all sorts of failings," Newey told the Telegraph. "We keep trying to offer help and try to be involved, but there seems to be a real reluctance to engage. It's one thing being in the position where you're not competitive but you can see your way out of it. After four dominant years at the pinnacle of Formula 1, Red Bull finds themselves in a difficult position and have simply transferred the blame to their most important supplier."It's another thing when you're not competitive and your partner doesn't seem to be willing to engage. I honestly don't know the reason for it,’’he added.