Lewis Hamilton topped the timesheets on the final day of testing this week at Jerez de la Frontera as the rain finally eased off allowing teams to get in some serious mileage.

At first it appeared that today's programme would be ruined, much like Wednesday and Friday, as the session got underway in wet conditions. However, the rain finally eased off and the blustery winds soon had the track dry enough for some serious running.

Waiting until the conditions improved, Lewis Hamilton ventured out to begin running at around 10:40. He was able to complete a 29-lap long run, and began a second long run, which was curtailed by red flags at the 25-lap mark.

The Woking team continued yesterday's programme, evaluating brake and brake materials while also working on weight distribution. At the end of the day, when the circuit became completely dry, the 2008 world champion was able to complete one final run, fitting a fresh set of tyres to set three fast laps in the 1:19s bracket. His time of 1:19.583s was the fastest of this week's four-day test.

Hamilton is scheduled to kick off proceedings at the start of next week's test on Wednesday, before Jenson Button takes over for the final two days.

Force India finished the VJM03's maiden test on a positive note, with Adrian Sutil posting the second quickest time of the day, just 0.597s behind Hamilton.

In the improved conditions from mid-morning, the team ran through systems checks, set-up evaluation and tyre comparisons. Sutil completed 84 laps of the Spanish track to bring the total test mileage to more than 1,200km.

"In the end we did some really good runs," said the German, "concentrating mainly on getting as much experience as we could with the new tyres. Set-up wise, we were pretty good already and the car balance is not so far away. We also tried a couple of longer runs and saving the tyres seems to be the key point as we could set some quick times on the early laps but then the tyres dropped off towards the end of the runs. We weren't going for a time, just trying to get as much information as possible at this stage to feed back into the programme for next week."

"We completed the final day of the test with a greater mileage than the previous days despite some poor weather to begin with and a planned period of downtime, which is positive," added Dominic Harlow. "Overall our objectives today were completed, meaning some mechanical and bodywork test items and tyre comparisons. It's been a good first test with the VJM3 confirming the base characteristics of the car and the most prominent effects of the regulation changes for 2010.

Rubens Barrichello was back on duty for Williams as the Grove outfit continued its preparations with further set-up work on the FW32. The Brazilian set the third fastest time of the day with a 1:20.341 and completed 90 before a gearbox issue forced him into the garage at approximately 16.00.

"We concentrated on set-ups today and completed 90 laps before we had the problem which the team are investigating now," said Barrichello. "The car has performed well these past two days and we've discovered some interesting things which will help us move it forward.

"I was hoping to go for a performance run at the end of the day because the car felt good," he continued, "but unfortunately my session was cut short. There's work to do in terms of improving performance, but I'm happy with the results that are coming out."