Renault Sport admits its performance is not 'where it needs to be', but was otherwise content to come away from the Malaysian Grand Prix with vastly improved reliability.

After its much publicised struggles - and subsequent fall-out with Red Bull - in Australia, Renault enjoyed a more productive weekend in Sepang, offering better reliability from its power unit, while all drivers reported improved 'driveability'.

Even so, though both Toro Rossos and Red Bulls would reach the finish line in Malaysia, Renault Sport managing director admits having each finish a lap down shows how much improvement needs to be made.

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"We said after Melbourne that we needed to react to the problems, but not overreact and we can see that the measures and countermeasures put in place since then have played dividends here. Engine-wise we are much more where we should have been in Australia.

"Reliability has globally been good - as it should be - and the improvements to driveability have allowed the teams to focus on the set-ups and see where the true performance of the cars is at the moment. Finishing one lap behind the leaders isn't where we need to be, but now we have very clear targets."

From a technical standpoint, director of operations Remi Taffin says there is plenty more potential in the engine now it has stabilised reliability.

"Four cars in the points after one of the toughest races of the year shows the amount of work that has gone on behind the scenes in the last two weeks. Driveability has been reasonably levelled up, and the drivers could clearly explore the potential of their cars. Absolute performance can be and will be improved while we are some way behind the front of the pack.

"We clearly have some potential in hand and improving reliability will allow us to get closer in the near future. We'll work hard with Toro Rosso and Red Bull to make sure we're maximizing this potential."