Renault will spend the final F1 test of the pre-season looking to improve its performance and drivability, but is confident it is otherwise ready for the opening round in Australia.

The engine firm enjoyed a considerably stronger second F1 test in Barcelona, following an inauspicious start to the year in Jerez, with both Red Bull and Toro Rosso completing a significant number of miles over the four days, the equivalent of a full race weekend for each driver.

With this in mind, director of operations Remi Taffin believes the firm is ready for the opening round in terms of reliability, but feels there are improvements to be made in terms of performance.

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"We were satisfied with the first test at Barcelona where, programme-wise, we were able to tick all the boxes for Red Bull and Toro Rosso. All four drivers have already completed an entire grand prix weekend's distance each, including practice, qualifying, a race simulation and procedures.

"So from a technical standpoint we're ready for Melbourne; everything has been checked. But we're still not producing the level of performance that we'd like to. That's something we'll be focusing on at the final round of official testing this week, but at least we're starting from a solid base.

"We've continued to shake down parts for Melbourne but are still missing some components and software that would allow us to fully optimise the Power Unit.

"So far we have pushed the ERS to its limits, but also focused our efforts around the internal combustion engine and turbo. It's for those last two elements that we're awaiting the newly developed components and software.

"Finally, we were aware that some driveability issues might exist on the opening morning as it's an area we weren't previously able to explore. We ended up doing it 'live' simultaneously in Barcelona and at the factory, which help to push the limits further."