Nico Hulkenberg admits it is difficult to say just how much catch-up work Force India have ahead of them despite their efforts in Barcelona.
After missing the first test in Jerez and using their old car in Barcelona last week, Force India finally took the covers off the VJM08 at the Circuit de Catalunya on Friday.
Hulkenberg clocked 77 laps on Friday and followed it up with another 157 on the penultimate day of testing on Saturday.
"I think it’s impossible to judge that right now," he is quoted as saying by NBCSport. "It’s going to be tough. We can be sure about that, it’s not going to be an easy one in Melbourne. A big challenge for us, but to be honest I’m very relaxed and open-minded.
"We go there as prepared as we can be with this limited running, and we’ll just make the most of it. We still have a lot of work in front of us. I can already see and identify some of the problems again this car has, but also some positives.
"I think overall we just need to stay focused and keep working hard in trying to develop this car."
Despite the tough task ahead, Hulkenberg was delighted that the VJM08 had no major technical problems on Saturday and was able to run for 157 laps.
"I think that’s a surprise even to myself," he said. "It’s very good that we brought it here and shook it out of our sleeve like this. That was a surprise I think to me, to the team and to everybody.
"But obviously that’s what we needed and helps us a little bit. I think we’ve achieved a lot today. I think everybody is as happy as they can be at the moment. Going back now, there’s a lot of data.
"Tomorrow is another day with Checo [Perez] in the car so hopefully there will be a lot more data and the engineers will have a lot of stuff to go through between now and Melbourne."