Minor issues hamper Red Bull's progress

Red Bull Racing driver David Coulthard needed to be replaced by Toro Rosso's Sebastian Vettel as the Scotsman suffers from a trapped nerve in his neck. Vettel and Webber concentrated on evaluating new parts on the RB4.

Christian Horner: "Unfortunately David suffered a trapped nerve in his neck yesterday, so we took the precautionary measure of giving him a day to recover ahead of the final day of testing and this near to the start of the season. It was logical to use Sebastian Vettel to continue testing, evaluating various important pre-Melbourne developments. We're grateful to Toro Rosso for making him available to us today. All being well, David will be back in the car tomorrow morning."

Mark's programme focused on evaluating some new development car parts in preparation for Melbourne and his day was therefore mainly data driven. Although some minor issues cost the team some time, valuable information was gained ahead of the first race in Australia.

Sebastian quickly acclimatised himself with the RB4, and focused on evaluating various set-ups, notching up 110 laps in the process.

Drivers: Mark Webber
Cars: RB4 - 02
Time: 1:23.458, Laps: 58

Drivers: Sebastian Vettel
Cars: RB4 - 01
Time: 1:22.558, Laps 110