Rosberg fastest on final day of Jerez Test

The final day of the WillimasF1's three day test would see the team abandon the morning session as the circuit was covered in a blanket of thick fog thus making it impossible for the emergency helicopter to take off or land.. The team could only start testing early in the afternoon.

Despite having gearbox problems Nico would set the fastest time of the day, and of the week, a 1m:18.309. He would complete fifty seven laps. Team test driver Alex Wurz would finish the day slowest, completing only twenty nine laps. Like his team-mate Alex would also have gearbox problems with his car.
WilliamsF1 Technical Director Sam Michael said to autosport.com: "It is quite normal to have teething problems when you have new car component, but I think we are on top of it now." It was the final test for WilliamsF1 team using the FW27C ca, as the 2006 FW28 will be unveiled next Friday.

Michael added: "This is the last proper test with this car and after the launch on Friday we have a two-day exclusive test in Valencia where all three drivers will have a go in the new car and on Wednesday the second car will arrive"

Sam Michael, Technical Director, WilliamsF1:
“Today we finished testing in Jerez with Nico and Alex, the last day before we run the FW28 in Valencia, after the launch. Although the circuit was closed in the morning due to fog, we managed to have a productive afternoon testing various tyre options with Bridgestone to further improve our understanding of the compound and construction requirements. Our Bridgestone engineers have responded exceptionally well to the direction taken from the November and December tests and we are seeing the results of that already. We also verified several new mechanical components for reliability.”

Simon Corbyn, Head of F1 Race Engineering, Cosworth:
“Cosworth experienced no significant engine problems on the CA2006 in Jerez this week. We were able to continue with the validation of updated engine components, while we also made good progress refining engine control strategies. Back in Northampton, we are flat out preparing engines for the new FW28 car builds. Engineering progress and dyno test results continue to be good and we will deliver a further engine performance gain when the CA2006 is installed in the new chassis.”