Jerez, Day 4: Caterham test report

Kamui Kobayashi: "First I want to say thank you to the whole team for making me feel so at home so quickly. My first day in the car may have ended earlier than we’d planned after another problem with the Renault engine, but, from where we’ve been earlier this week, it’s very good to have completed 54 laps. For me, it was also good to be back in an F1 car and to be working with a team that I’m already feeling very happy with.

"In the morning we started on a very damp track so we were on full wets until about 1030 when we went onto inters as the track was starting to dry. We were working through a number of different engine maps and were definitely making progress but just after lunch we had another engine problem which meant we had to stop.

"We were going to try some longer runs in the afternoon, and I’m sure we’d have made more progress, but now we’ll go back to the factory to work through all the information from this test and aim to build on our better last day here when we get to Bahrain."

Cedrik Staudohar, Track Support Leader, Renault Sport F1: "Despite having to finish our Friday a couple of hours before the end of the session, this was still a much better day for us. We were able to work through a busy program with Kamui, looking at different engine maps and torque settings and, until the issue that stopped us running, it was clear that we made some progress on reliability."

Cyril Abiteboul, Team Principal, Caterham F1 Team: "I’m pleased for the whole team that we managed to finish the test with a more decent number of laps today, but there is still clearly a lot of work to do to prepare for the next test. Obviously a lot of the focus is on Renault, and it is imperative that they make significant progress on all areas of engine performance and reliability, but we are in partnership with them and we will work as closely as we always have to help them find solutions and deliver the package we know they can on track.

"For our team, it’s been a tough but interesting week and I’m proud of how hard everyone on track in Spain and back at base in Leafield has been working. We’ve given Marcus, Kamui and Robin tracktime, albeit limited in Marcus and Robin’s cases, and I’m pleased to see how well all three are fitting into the team.

"Now we have just over two weeks to prepare for the Bahrain tests and everyone is ready for the work that lies ahead. Our 60% scale wind-tunnel program at TMG in Cologne also started on Tuesday, the first day on track in Spain, and that’s a big plus for us as we look to develop CT05 now and throughout the season to come."