Webber fastest on final day at Barcelona

Mark Webber rounded off this weekend's Formula One test at Barcelona in Spain with the fastest time today, as his Red Bull Racing RB4 finally showed a glimpse of its potential

Having not been massively fast in the first two weeks of running, the introduction of a high engine cover fin on the RB4 this week appeared to deliver a step forward in pace.

Webber's best lap was just four hundredths of a second faster than McLaren's Heikki Kovalainen, with Lewis Hamilton just a further three hundredths further back.

Robert Kubica once again confirmed that the balance issues that affected early running of the BMW Sauber F1.08 were now well behind the team, as he got within a few hundredths of the McLaren drivers ahead of him.

Fernando Alonso continued to work on improving the Renault R28 to set the fifth fastest time, while sixth fastest Nick Heidfeld brought out the only red flag of the day when he spun off at 10:05 am.

The competitiveness of the F1 field was proved with less that one second covering Webber down to 10th fastest Sebastian Vettel in the Scuderia Toro Rosso.

Falling outside that window was the new Honda Racing RA108, which has had a disappointing test. Rubens Barrichello and Jenson Button ended the test 11th and 13th on the timesheets, with Force India's Adrian Sutil in between them.

Williams missed the final day of the test after deciding to return to their factory to resolve the wing problems that marred the first two days of their test.

Weather too played a part in today's running, with rain coming down from 4:00 pm onward.

Pos  Driver          Team                     Time      Laps
 1.  Webber          Red Bull-Renault    (B)  1:22.385   65
 2.  Kovalainen      McLaren-Mercedes    (B)  1:22.422   67
 3.  Hamilton        McLaren-Mercedes    (B)  1:22.459   92
 4.  Kubica          BMW-Sauber          (B)  1:22.492   83
 5.  Alonso          Renault             (B)  1:22.509   63
 6.  Heidfeld        BMW-Sauber          (B)  1:22.874   79
 7.  Bourdais        Toro Rosso-Ferrari  (B)  1:22.887   80
 8.  Coulthard       Red Bull-Renault    (B)  1:23.889   81
 9.  Piquet          Renault             (B)  1:23.039   64
10.  Vettel          Toro Rosso-Ferrari  (B)  1:23.232   74
11.  Barrichello     Honda               (B)  1:23.795   84
12.  Sutil           Force India-Ferrari (B)  1:23.800   86
13.  Button          Honda               (B)  1:23.808   85