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Sebastian Vettel's second practice session around the streets of Monaco was hindered by a KERS problem in his Red Bull.
Vettel was ninth quickest at the circuit where he won in 2011.
"I think generally it was okay," he said of his day. "Unfortunately we lost quite a lot of time in the afternoon while we were making some changes, but that can happen on Friday, or in this case Thursday. We’d like to be a little bit more competitive, so we need to try and find some more lap time. We had a KERS issue this afternoon, so I didn’t use the system during P2. The guys know what the problem was with that."
Team-mate Mark Webber reckons Red Bull had one of their most productive Monaco practice sessions for a long time.
Webber set the fifth fastest time.
"I think traditionally we’re never too electric here on Thursday’s, so today was actually one of the better ones we’ve had in the last few years. You’ve got to be very, very focused here; concentration is very, very high".
"It’s a challenging venue to pull everything together; we want to obviously get short run performance as well as gaining short and long run data, which I think we’ve got. There are some quick cars out there; we’ve seen that on Saturday at the last few GPs. All in all, a reasonably smooth day for us, we’ve got plenty to go through now."
