Kamui Kobayashi: "Overall, it's been a better Friday than we've had for a while. We made good progress on nearly every run and it looks like from our times today that we may be quite a bit more competitive with our nearest rivals than for quite a few races. Good reliability has been one of the keys to that, from us and Renault, so we should be pretty pleased with how Friday's gone for us in Hungary.

"Similar to my teammate, on my first run in FP1 there was almost no grip at all, plus I had some issues with front and rear brake locking so we made quite a few changes to the car for the second run and found a small improvement next time I went out. The grip was still so low I couldn't really judge how the balance actually was - it was switching from oversteer to understeer in each corner so we made more mechanical and aero changes for the next run and we definitely started to find some time. By the end of the session the grip was improving and I was finally starting to find a balance that was working, but also important was that we had a clean session with no reliability issues so we could make sure we ran through the whole program.

"In FP2 we went straight out on a set of mediums for the first run and I immediately had quite a lot of understeer pretty much everywhere. We tried another mechanical change and the balance did improve a little, but on my quickest lap on the second run I had a small spin so we boxed to go onto the soft tyres for the first time. The car definitely felt better on the softs than the mediums, and on the long run they held up pretty well, so that gives us some good strategy options for Sunday. Now we have to continue this performance through to tomorrow and Sunday and aim to fight as hard as we can in quali and the race."

Marcus Ericsson: "At the start of FP1 the grip level was just so low - the car was sliding around everywhere and I couldn't push anywhere around the track. I know the Hungaroring is always pretty green at the start of the weekend, but it was worse than I'd expected. You can go chasing the track when it's like this, trying to find setups that work, but we have to let the track come to us as the grip level improves overall, so for the next run we continued with the plan and were improving, little by little as the session went on.

"The track temps had gone up a lot in FP2 and for me the car was behaving quite strangely on the first run. It was switching from understeer to oversteer through most of the corners and, honestly, it was quite hard not to make a mistake. Towards the end of that opening run the balance did start improving a little, but it was still pretty hard to push as much as I'd have liked.

"On the options the balance improved quite a bit and as the track was rubbering in the grip levels finally started improving. On my performance run on the softs I didn't really have a clean lap so there was quite a bit more time to come, but with the time left in the session we went onto the long run and our race pace looked ok.

"It's good to see we've made progress here from setup, it gives us a chance to be much more competitive with Marussia than we've been for a while, so after we've been through all the data from today we want to continue to improve tomorrow, and again on Sunday."

Christijan Albers, Team Principal: "From all aspects of our team operations this has been a much improved Friday for us. Our performance levels have increased, both in the garage and on track, and good reliability from us, Renault Sport F1 and Red Bull Technology has helped us achieve all our targets today. We also have a number of new sponsors on the cars here in Hungary which shows that we are making positive progress across all areas of the team - now we aim to continue this upward trend for the rest of the weekend."

Cedrik Staudohar, Renault Sport F1 track support leader: "We had a positive day today and were able to complete the entirety of our programme on both cars. We conducted a couple of tests with energy management and ignition settings and everything went well - all in all a positive Friday that we hope to build on tomorrow."

Check out our Friday gallery, here.