Renault's F1 director of operations Remi Taffin says the manufacturer is heading to the Chinese Grand Prix in a more aggressive frame of mind as they look to recover from a difficult start to the 2015 season.

The French power unit supplier came under rigorous criticism from Red Bull's Christian Horner in the post-race examinations of the season-opening Australian Grand Prix. Despite a slight improvement in Malaysia - the four Renault-powered cars all finished inside the points - Taffin accepts Renault still has a long way to go to catch up its rivals.

"We have continued the intensive test program started after Australia and we will see further results in Shanghai," Taffin said. "Performance was likewise an improvement in Malaysia, although we did keep some in reserve to safeguard reliability.

"Now we are getting more confident in this area we can afford to be more aggressive and we should see better results on the straights, with a higher top speed."

Taffin believes his team has got on top of its technical problems with the improvements made to driveability and performance between Sepang and Shanghai and feels the Red Bull and Toro Rosso teams can challenge the Williams' pair.

"In Malaysia we got close to what we would consider the normal level of driveability we had at the end of 2014," he added. "For China we will have some small steps forward. With the improvements we hope we can fight the Williams' cars and grab some more points in China."



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