Jenson Button says that MP-27’s hydraulic problem cost his final test critical time on the second last day at Barcelona. McLaren set up with news parts for today running but more time shortened by a hydraulic trouble through the morning’s session.
“When you get new parts, you want to go out and put lots of laps on it in order to compare it to what you had previously – but we weren’t able to do that today. We had a hydraulics issue in the morning, which meant we didn’t do much running.
“So it wasn’t the easiest morning – and then we didn’t do much running in the afternoon either because of the rain. We put a couple of good laps in but didn’t get any set-up work done – because of the rain.
“It was nice to drive the new package, and I have a good feeling about it, but I need to work with it for a bit longer to find the right balance for it. Hopefully, Lewis will put some more laps on the car tomorrow.”